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LSAT Explanations › PrepTest 152 › Section 2

Logical Reasoning

PrepTest 152 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:
    Student: My university recently enacted new penalties…Flawed Reasoning

    The new efforts won't succeed.

  2. Q2:
    Anderson: Taking the long view, history shows that word usage…Point at Issue
  3. Q3:
    Requiring that passwords conform to rules of length…Sufficient Assumption

    Password rules make it more likely that someone will get into a user's account. (Rule examples: length, complexity, unpredictability)

  4. Q4:
    In view of the considerable length of the police chief's…Principle – Justify

    We should hold the chief responsible for the corruption at his department, even if he wasn't personally involved.

  5. Q5:
    A store was vandalized repeatedly over a six-month period…Weaken

    The friend concluded that there was bright lighting installed around the store.

  6. Q6:
    Researchers studying athletes found that those who played…Most Strongly Supported

    Athletes who play for love of their sport had better vision than those who just wanted to win a trophy or competition.

  7. Q7:
    Economist: ChesChem, a chemical manufacturer located…Necessary Assumption

    If natural gas prices go up in Chester even a tiny amount, ChesChem will move to Tilsen.

  8. Q8:
    When researchers discovered that cuttlefish have the ability…Paradox

    It turns out cuttlefish don't use "startle displays" to scare off predators.

  9. Q9:
    If the winner of a promotional contest is selected by a lottery…Strengthen

    The lottery wasn't fair.

  10. Q10:
    Godinez: In the past, land was sometimes measured by…Identify the Conclusion

    As land use moved beyond farming, we needed new ways to measure land that didn't depend on plowing difficulty.

  11. Q11:
    Last year the Lalolah River was ranked by the Sunvale Water…Flawed Reasoning

    Sunvale must have cleaned up the Lalolah river.

  12. Q12:
    If an activity significantly reduces chronic lower back pain…Necessary Assumption

    Doctors should be ready to discuss yoga's use in treating back pain.

  13. Q13:
    Shelton: The recent sharp decline in the number of moose…Paradox

    Shelton says that the moose population in region A declined because there were more white tailed deer.

  14. Q14:
    Until fairly recently, classroom computers were considered…Principle – Conform

    Classroom computers used to be a luxury.

  15. Q15:
    A scientific team compared gold samples from several ancient…Weaken

    Probably the gold in the artifacts was mined from the ancient mine.

  16. Q16:
    Most pet owners who take allergy medication are allergic…Flawed Parallel Reasoning

    If Chuck gets a pet allergy he will probably take allergy medication.

    **Diagram:** Pet allergy (most)➞ take allergy medication

    **Note:** On the LSAT, words such as "likely" and "probably" mean the same thing as "most", so this argument's conclusion is a "most" statement.

  17. Q17:
    Scientist: A number of errors can plague a data-collection…Paradox

    Researchers correct errors in data.

  18. Q18:
    Doctor: Angiotensinogen is a protein in human blood…Flawed Reasoning

    Disease X surely causes high blood pressure.

  19. Q19:
    Some species of tarantula make good pets…Parallel Reasoning

    Not every tarantula species has poison fangs.

  20. Q20:
    Pulford: Scientists who study the remains of ancient…Method of Reasoning
  21. Q21:
    Ethicist: It is morally right to reveal a secret only if…Principle – Parallel
  22. Q22:
    Although human economic exchange predates historical…Flawed Reasoning

    Barter was the original system and came before currency.

  23. Q23:
    A scientific study provides evidence that crows are capable…Necessary Assumption

    A study suggests crows may be able to recognize threatening humans and tell other crows about them.

  24. Q24:
    Political scientist: When a bill comes before a legislative body…Must be False

    Most of the time, a bill can get a majority of votes in a legislature.

  25. Q25:
    The more demand there is for something, the easier it is…Necessary Assumption

    Used cars less than ten yers old tend to be easier t0 sell than cars which are older than ten years old.

About this section

Originally Section 1 of PrepTest 82, administered in September 2017.

Question types

Flawed Reasoning4 · 16%
Necessary Assumption4 · 16%
Paradox3 · 12%
Weaken2 · 8%
Flawed Parallel Reasoning1 · 4%
Identify the Conclusion1 · 4%
Method of Reasoning1 · 4%
Most Strongly Supported1 · 4%
Must be False1 · 4%
Parallel Reasoning1 · 4%
Point at Issue1 · 4%
Principle – Conform1 · 4%
Principle – Justify1 · 4%
Principle – Parallel1 · 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 152 explanations

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