Hard LSAT Main Conclusion Questions Practice Questions

Hard LSAT Main Conclusion Questions Practice Questions

Identifying the central point of a complex argument constitutes one of the most vital skills for success on the Law School Admission Test. Hard LSAT Main Conclusion Questions Practice Questions focus on isolating the specific claim that the author intends to prove, distinguishing it from premises, background information, and intermediate conclusions. These questions frequently appear in the Logical Reasoning section, where test-takers must navigate through dense prose and layered logic to find the ultimate thesis.

Concept Explanation

A main conclusion is the primary claim that an argument seeks to establish and is supported by all other premises provided in the stimulus. In high-difficulty LSAT questions, the main conclusion is rarely signaled by simple indicator words like "therefore" or "thus." Instead, the test often places the conclusion in the middle of the paragraph or at the very beginning, followed by evidence. A common trap involves the "intermediate conclusion," which is a claim supported by some evidence but which itself serves as a premise for the final, overarching point. To identify the main conclusion, you should apply the "Why Test": ask of each statement, "Why does the author believe this?" If a statement is supported by others but does not support any further claim in the passage, it is likely the main conclusion. You can also review our LSAT Prep hub for a broader view of how these questions fit into the exam structure. Understanding the nuance between a sub-conclusion and a final conclusion is the difference between a 160 and a 170+ score.

Solved Examples

1. Example 1: The Intermediate Conclusion Trap
   Stimulus: Many economists argue that lowering corporate taxes will inevitably lead to increased capital investment. However, these economists overlook the fact that corporations often use tax savings to buy back shares rather than expand operations. Since share buybacks do not create new jobs, it follows that lowering corporate taxes is an ineffective way to stimulate the labor market. Therefore, the government should prioritize infrastructure spending instead.
   Step-by-Step Solution:
   1. Identify the claims: (1) Economists' view on taxes, (2) Fact about share buybacks, (3) Tax cuts are ineffective for the labor market, (4) Government should prioritize infrastructure.
   2. Analyze the relationship: Claim 3 is supported by Claim 2. However, Claim 3 is then used to support Claim 4.
   3. Determine the final point: The author concludes that infrastructure is the priority. The claim about tax cut ineffectiveness is merely an intermediate step.
   4. Final Conclusion: The government should prioritize infrastructure spending.
2. Example 2: The Rebuttal Structure
   Stimulus: Critics of the new city park claim that the maintenance costs will be prohibitive. But these critics are wrong. The park will feature native plants that require minimal watering and no chemical fertilizers, significantly reducing long-term costs compared to traditional parks.
   Step-by-Step Solution:
   1. Identify the target: The author is responding to "critics."
   2. Locate the pivot: The word "But" signals the author's stance.
   3. Isolate the claim: The author's main point is that the critics are wrong about the costs.
   4. Verify the support: The details about native plants and minimal watering serve as premises to prove why the critics are wrong.
   5. Final Conclusion: The critics' claim that maintenance costs will be prohibitive is incorrect.
3. Example 3: The First-Sentence Conclusion
   Stimulus: It is a mistake to believe that the recent decline in honeybee populations is due solely to pesticide use. Recent studies show that habitat loss has reduced the availability of diverse pollen sources. Furthermore, the spread of the Varroa mite has weakened hives globally. While pesticides do play a role, they are clearly just one of several contributing factors.
   Step-by-Step Solution:
   1. Identify the primary assertion: The first sentence claims the decline isn't *solely* due to pesticides.
   2. Check for support: The mentions of habitat loss and mites support the idea that other factors exist.
   3. Evaluate the final sentence: The final sentence restates the first sentence in different words.
   4. Final Conclusion: Pesticide use is not the only cause of the decline in honeybee populations.

Practice Questions

1. The recent surge in electric vehicle (EV) sales is often cited as evidence that the public is becoming more environmentally conscious. However, this interpretation ignores the significant government subsidies that make EVs cheaper than internal combustion cars. Since most consumers prioritize cost over environmental impact, the sales surge is primarily a result of financial incentives rather than a shift in values.

2. Dietary supplements are not a valid substitute for a balanced diet. Although supplements can provide specific vitamins, they lack the complex fiber and phytonutrient matrices found in whole foods. Furthermore, the body absorbs nutrients more efficiently when they are consumed in their natural state. Consequently, relying on pills for nutrition will likely result in suboptimal health outcomes.

3. Philosophical skepticism regarding the existence of the external world is ultimately self-defeating. To argue that we cannot know if the world exists, the skeptic must use language. But language is a social tool that presupposes the existence of other people and a shared environment. Therefore, the very act of articulating skepticism requires the existence of the world the skeptic doubts.

4. Many historians believe that the fall of the Roman Empire was caused by lead poisoning from water pipes. Yet, recent skeletal analysis shows no higher lead concentrations in Romans from the late empire than in those from the early empire. Because the empire thrived during the early period despite these lead levels, lead poisoning cannot be the primary cause of its eventual collapse.

5. Ensuring that all citizens have access to high-speed internet is a moral imperative for modern governments. In the 21st century, education, job opportunities, and healthcare services are increasingly moved online. Without internet access, individuals are effectively barred from participating in the economy. Thus, internet access is now a fundamental requirement for social equity.

6. The city council’s plan to increase property taxes to fund a new stadium is misguided. While the stadium might bring in tourists, the tax hike will likely drive long-term residents to the suburbs. This exodus will decrease the local tax base over time, negating any short-term gains from tourism. The council should instead look for private investors to fund the project.

7. Some scientists argue that the presence of liquid water on Mars proves that life once existed there. This is a leap in logic. Water is a necessary condition for life as we know it, but it is not a sufficient condition. Many other factors, such as a stable atmosphere and the presence of organic molecules, must also be present. Thus, the discovery of water does not, by itself, confirm the existence of past Martian life.

8. Even though the new software update was designed to improve efficiency, it has actually caused a decrease in productivity. The interface changes are so drastic that employees require extensive retraining. Until this training is complete, the time lost navigating the new system will outweigh any technical speed gains. Therefore, the company should have phased the update in gradually.

Answers & Explanations

1. The sales surge in EVs is primarily a result of financial incentives rather than a shift in values.
The author acknowledges a common interpretation (environmental consciousness) but then provides evidence (subsidies, consumer cost priorities) to support the claim that financial incentives are the real driver. This final claim is the point the author wants the reader to accept.

2. Relying on pills for nutrition will likely result in suboptimal health outcomes.
The first sentence is a general claim, but the final sentence is the ultimate conclusion derived from the premises about fiber, phytonutrients, and absorption efficiency. The "consequently" helps identify this as the terminal point of the logic.

3. Philosophical skepticism regarding the existence of the external world is ultimately self-defeating.
This is a classic first-sentence conclusion. The author states a position and then uses the rest of the passage (language as a social tool, presupposition of others) to explain why that position is true. For more practice on analyzing logical structures, you might find the Hard GRE Reading Exam Questions helpful as they share similar structural complexities.

4. Lead poisoning cannot be the primary cause of the Roman Empire's eventual collapse.
The author uses the skeletal analysis data and the comparison between the early and late empire to disprove the historians' theory. The rejection of the lead poisoning theory is the main conclusion.

5. Internet access is now a fundamental requirement for social equity.
The first sentence is a strong claim (moral imperative), but the final sentence is the conclusion that summarizes the argument about economic participation and social equity. The "Thus" signals the final deduction.

6. The council should look for private investors to fund the project.
The author argues that the current plan is "misguided" (intermediate conclusion) because it will drive residents away. The final recommendation—to seek private investors—is the ultimate point the author is advocating for.

7. The discovery of water does not, by itself, confirm the existence of past Martian life.
The author refutes a specific scientific claim. The premises about necessary vs. sufficient conditions are used to support the final statement that water alone is not enough to confirm life.

8. The company should have phased the update in gradually.
The passage explains why productivity decreased (retraining needs), leading to the final judgment that a gradual phase-in would have been the superior strategy.

Frequently Asked Questions

What is the main difference between a premise and a conclusion?

A premise is a statement of fact or evidence used to support a claim, whereas a conclusion is the claim that the author wants you to accept based on those premises. In hard LSAT questions, the relationship is often complex, with some statements acting as both a conclusion of one premise and a premise for another.

Can the main conclusion be a question?

No, the main conclusion must be an assertion or a claim. While a passage might start with a question to frame the topic, the conclusion will be the author's answer to that question or their stance on the issue raised.

How can I distinguish the main conclusion from an intermediate one?

Apply the directional test: ask if Statement A supports Statement B, or if Statement B supports Statement A. The one that receives support but gives none to the other is the more "final" conclusion. You can refine these skills by using an AI Question Generator to practice different argument structures.

Does the main conclusion always appear at the end of the text?

Absolutely not; the LSAT frequently places the main conclusion at the beginning or in the middle of a stimulus to increase difficulty. You must rely on the logical flow of the argument rather than the physical position of the sentences.

Are there specific words that always signal a main conclusion?

While words like "thus," "hence," and "so" often signal conclusions, they are not guaranteed to signal the *main* conclusion. On harder questions, the main conclusion often lacks any indicator words at all, requiring you to identify it through its logical relationship to the other sentences.

Should I look for the conclusion before reading the answer choices?

Yes, you should always identify the main conclusion in your own words before looking at the choices. This prevents you from being swayed by "distractor" choices that accurately describe a premise or an intermediate conclusion instead of the main point.