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LSAT Explanations › PrepTest 135 › Section 2

Logical Reasoning

PrepTest 135 Section 2

Find the question you’re working on. Explore the reasoning, understand each answer, and learn from your mistakes.

25 question explanationsUnscored section

Choose a question

Explanations for every question, find them by number or text.

  1. Q1:
    Any museum that owns the rare stamp that features …Principle – Conform

    Any museum that owns this rare stamp shouldn't display it, even if that means the public can't see it.

  2. Q2:
    Dietitian: Many diet-conscious consumers are excited about …Identify the Conclusion
  3. Q3:
    Banking analyst: Banks often offer various services to new customers …Strengthen

    It's not ideal for banks to offer free services to only new customers.

  4. Q4:
    Panelist: Medical research articles cited in popular newspapers …Flawed Reasoning

    Researchers are influenced by publicity when deciding which studies are important.

  5. Q5:
    Lahar: We must now settle on a procedure for deciding …Method of Reasoning

    The club should use majority vote to decide meeting agendas.

  6. Q6:
    Mayor: Local antitobacco activists are calling for …Weaken

    Higher taxes on cigarettes would reduce smoking.

  7. Q7:
    Gotera: Infants lack the motor ability required to …Necessary Assumption

    Speech acquisition is entirely a motor control process, not a mental process.

  8. Q8:
    Caldwell: The government recently demolished …Flawed Reasoning

    The government's decision to demolish the former naval base was immoral.

  9. Q9:
    Reducing stress lessens a person's sensitivity to pain …Necessary Assumption

    Reducing stress makes people less sensitive to pain.

  10. Q10:
    Samuel: Because communication via computer is usually …Point at Issue
  11. Q11:
    Spreading iron particles over the surface …Principle – Conform

    The iron-seeding strategy should not be implemented right away.

  12. Q12:
    No matter how conscientious they are, historians always …Flawed Reasoning

    Historians should interpret what participants thought about historical events instead of interpreting the events themselves.

  13. Q13:
    Humanitarian considerations aside, sheer economics dictates that …Necessary Assumption

    Economically, Country X should create a nationwide transport system for seriously injured patients.

  14. Q14:
    Early urban societies could not have been maintained without …Most Strongly Supported

    Early urban societies needed large-scale farming, because other ways to get food wouldn't have been able to support such dense populations.

  15. Q15:
    Economist: A country's rapid emergence from …Sufficient Assumption

    Countries that put collective goals before individuals' goals cannot emerge quickly from an economic recession.

  16. Q16:
    The average length of stay for patients at Edgewater …Flawed Reasoning

    University Hospital could shorten its patients' average hospital stay without reducing the quality of care.

  17. Q17:
    Philosopher: Graham argues that since a person …Role in Argument

    Graham's argument isn't convincing.

  18. Q18:
    Historian: In rebuttal of my claim that West …Most Strongly Supported

    People think West didn't influence Stuart because West's work is only mentioned once in Stuart's diaries but:

    * Stuart's diaries mention several meetings with West
    * Stuart's close friend studied under West
    * Stuart's work frequently used West's terminology, which no one else used at the time

  19. Q19:
    One theory to explain the sudden extinction of all dinosaurs …Weaken

    Dinosaurs may have gone extinct because they overdosed on poisonous angiosperms.

  20. Q20:
    There are two ways to manage an existing transportation infrastructure …Paradox

    There are two ways to manage transportation infrastructure.

  21. Q21:
    A good way to get over one's fear of an activity …Flawed Reasoning

    Doing something repeatedly is a good way to overcome your fear of it.

  22. Q22:
    Most economists believe that reducing the price of any product …Paradox

    Lowering the price of domestic wine often leads to higher sales of imported wine.

  23. Q23:
    Certain bacteria that produce hydrogen sulfide …Most Strongly Supported

    Certain bacteria produce hydrogen sulfide.
    * The hydrogen sulfide removes oxygen that would otherwise kill the bacteria.
    * It also kills nearby organisms that the bacteria can eat.
    * Because of this, a dense colony can keep itself alive indefinitely.

  24. Q24:
    Books that present a utopian future in which the inequities …Flawed Parallel Reasoning

    Gloomy books are unlikely to be very popular.

  25. Q25:
    Some people mistakenly believe that since we do not …Principle – Application

About this section

Originally Section 3 of PrepTest 52, administered in September 2007.

Question types

Flawed Reasoning5 · 20%
Most Strongly Supported3 · 12%
Necessary Assumption3 · 12%
Paradox2 · 8%
Principle – Conform2 · 8%
Weaken2 · 8%
Flawed Parallel Reasoning1 · 4%
Identify the Conclusion1 · 4%
Method of Reasoning1 · 4%
Point at Issue1 · 4%
Principle – Application1 · 4%
Role in Argument1 · 4%
Strengthen1 · 4%
Sufficient Assumption1 · 4%

Based on our explanation classifications. Each of the 25 questions is counted once.

Section 1: Logical Reasoning
Section 3: Reading Comprehension
All PrepTest 135 explanations

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