LSATHacks
  • Explanations
  • Tutoring
  • Courses
  • Login
  • Cart
  • Explanations
  • Tutoring
  • Courses
  • Login
  • Cart
LSAT Explanations › PrepTest 131 › Section 2

Logical Reasoning

PrepTest 131 Section 2

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

26 question explanationsScored section

Choose a question

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

  1. Q1:
    On the Caribbean island of Guadeloupe, a researcher …Strengthen

    Eating the tropical fruits soursop, custard apple and pomme cannelle causes atypical Parkinson’s.

  2. Q2:
    Price: A corporation's primary responsibility is to its …Point at Issue
  3. Q3:
    Despite the enormous number of transactions processed daily …Most Strongly Supported

    Banks have an enormous number of transactions.

  4. Q4:
    Scientist: While studying centuries-old Antarctic ice …Flawed Reasoning

    Atmospheric pollution caused global temperatures to rise in the 1500s.

  5. Q5:
    Gilbert: This food label is mistaken. It says that these …Strengthen
  6. Q6:
    Although Jaaks is a respected historian, her negative review …Flawed Reasoning

    Jaaks’ negative review of Yancey’s book relies on a mistake.

  7. Q7:
    Columnist: It has been noted that attending a live musical …Role in Argument

    There must be some other reason that live music is richer than recorded music.

  8. Q8:
    Though ice cream is an excellent source of calcium …Flawed Reasoning

    People must have decided to get their calcium from cheddar cheese instead of ice cream.

  9. Q9:
    No member of the Richardson Theatre is both a performer …Flawed Parallel Reasoning

    Leon and Marta must be performers.

  10. Q10:
    Chemical fertilizers not only create potential health hazards …Identify the Conclusion

    The fact that chemical fertilizers destroy earthworms is enough reason not to use chemical fertilizers.

  11. Q11:
    Medical research has established that the Beta Diet is …Paradox

    The beta diet is healthier.

  12. Q12:
    A theoretical framework facilitates conceptual organization …Complete the Argument

    Using a theoretical framework is not the best way to do historical research.

    (This was my prediction. The actual answer is a bit different.)

  13. Q13:
    Bethany: Psychologists have discovered a technique …Principle – Justify

    Psychologists should identify children prone to nightmares, and teach them to have pleasant dreams instead.

  14. Q14:
    At one sitting, a typical doughnut eater consumes 4 doughnuts …Necessary Assumption

    There’s little difference between a typical doughnut eating session and a typical bagel eating session, in terms of calories.

  15. Q15:
    Bowers: A few theorists hold the extreme view that society …Flawed Reasoning

    The anarchist theories ignore that any acceptable social philosophy must promote peace and order. Anarchism deserves no further attention.

  16. Q16:
    All poets, aside from those who write only epigrams …Parallel Reasoning

    Azriel has wit.

  17. Q17:
    Teachers should not do anything to cause their students to …Sufficient Assumption

    Teachers shouldn’t pretend to know answers when they don’t.

  18. Q18:
    Contrary to Malthus's arguments, human food-producing capacity …Role in Argument

    Malthus will probably eventually be proven correct.

  19. Q19:
    At a gathering at which bankers, athletes, and lawyers …Must be True

    Lawyer or ~~Athlete~~ → ~~Banker~~

    Banker → ~~Lawyer~~ and Athlete

  20. Q20:
    Quality control investigator: Upon testing samples …Flawed Reasoning

    The manufacturer violated their contract.

  21. Q21:
    Essayist: When the first prehistoric migrations of humans …Weaken

    The microorganisms that humans carried to North America probably caused the mass extinctions.

  22. Q22:
    A recent study confirms that nutritious breakfasts make …Strengthen

    A new study shows that nutritious breakfasts improve worker productivity.

  23. Q23:
    This year a flood devastated a small river town …Principle – Conform

    Hollyville, in the past, sent little aid after an earthquake occurred elsewhere.

  24. Q24:
    Market analyst: According to my research, 59 percent of …Complete the Argument

    Interest rates probably aren’t the main selling points of credit cards.

  25. Q25:
    About 3 billion years ago, the Sun was only 80 percent …Weaken

    The level of carbon dioxide was likely much higher three billion years ago than it is today.

  26. Q26:
    Commentator: For a free market to function properly …Sufficient Assumption

    The auto repair industry isn’t a properly functioning free market.

About this section

Originally Section 2 of PrepTest 59, administered in December 2009.

Question types

Flawed Reasoning5 · 19%
Strengthen3 · 12%
Complete the Argument2 · 8%
Role in Argument2 · 8%
Sufficient Assumption2 · 8%
Weaken2 · 8%
Flawed Parallel Reasoning1 · 4%
Identify the Conclusion1 · 4%
Most Strongly Supported1 · 4%
Must be True1 · 4%
Necessary Assumption1 · 4%
Paradox1 · 4%
Parallel Reasoning1 · 4%
Point at Issue1 · 4%
Principle – Conform1 · 4%
Principle – Justify1 · 4%

Based on our explanation classifications. Each of the 26 questions is counted once.

Section 3: Logical Reasoning
All PrepTest 131 explanations

Hi, I'm Graeme Blake

I scored a 177 on the LSAT. I founded LSATHacks and created the LSAT Mastery Seminars to help students succeed.

I’ve personally written explanations for 5,000+ LSAT questions. If you find these explanations helpful, you'll definitely like our courses.

Join my email list for LSAT study tips and resources.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Resources

  • Articles
  • Blog
  • Free Email Course
  • LSAT Preptest Converter
  • Experimental Section Checker
  • LSAT Prep Books

About LSATHacks

  • About/Contact
  • Courses
  • Free Trial

Community

  • Discord
  • Social Media
  • Webinars
Disclaimer: Use of these explanations requires official LSAT preptests. LSAT is a registered trademark of LSAC.
LSAC does not review or endorse specific test preparation materials or services and has not reviewed this site.

© Copyright 2026 LSATHacks. All Rights Reserved. | Privacy | Terms