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LSAT Explanations › PrepTest 123 › Section 2

Logical Reasoning

PrepTest 123 Section 2

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

25 question explanationsScored section

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

  1. Q1:
    Economist: Every business strives to increase its productivity…Identify the Conclusion

    Not all efforts to increase productivity help the business, overall.

  2. Q2:
    All Labrador retrievers bark a great deal. All Saint Bernards…Flawed Parallel Reasoning

    Rosa’s dogs bark a moderate amount.

  3. Q3:
    A century in certain ways is like a life, and as the end…Complete the Argument

    At the end of a century, people will look back on the events of the century.

  4. Q4:
    Consumer: The latest Connorly Report suggests that…Flawed Reasoning

    The report is wrong.

  5. Q5:
    Scientist: Earth's average annual temperature has increased…Weaken

    The 0.5 degree celsius warming was caused by larger amounts of minor gases in the atmosphere.

  6. Q6:
    An undergraduate degree is necessary for appointment…Sufficient Assumption

    Murray can’t be executive administrator.

  7. Q7:
    Ethicist: The most advanced kind of moral motivation…Principle – Conform
  8. Q8:
    Proponents of the electric car maintain that when the…Complete the Argument

    The electric car causes some pollution. [This was my prephrase before doing the answers]

  9. Q9:
    Although video game sales have increased steadily over …Weaken

    Video games sales will soon decline.

  10. Q10:
    Double-blind techniques should be used whenever possible…Identify the Conclusion

    We should use double-blind techniques in experiments as much as we can.

  11. Q11:
    It is now a common complaint that the electronic media…Role in Argument

    Electronic media will probably alter rather than worsen the human mind.

  12. Q12:
    Suppose I have promised to keep a confidence and someone asks…Parallel Reasoning

    It’s impossible to have to keep all promises and also to have to answer every question honestly.

  13. Q13:
    Standard aluminum soft-drink cans do not vary in the amount…Sufficient Assumption

    Group M has twice as many cans as group L.

  14. Q14:
    A cup of raw milk, after being heated in a microwave oven…Weaken

    Microwaves are what destroy lysozyme enzyme. Heat is not the cause.

  15. Q15:
    A new government policy has been developed to avoid…Sufficient Assumption

    We’ll need to vaccinate all high-risk individuals every year.

  16. Q16:
    Taylor: Researchers at a local university claim that …Point at Issue
  17. Q17:
    Hospital executive: At a recent conference on nonprofit…Flawed Reasoning

    We ought to make client confidentiality protection our highest priority.

  18. Q18:
    Modern science is built on the process of posing hypotheses…Most Strongly Supported

    Few scientists have found evidence that global warming is unlikely.

  19. Q19:
    Historian: The Land Party achieved its only national victory…Strengthen – Exception

    The Land Party succeeded because:

    1. It addressed the concerns of agricultural and small business interests, and
    2. Because those groups were facing deep problems.

  20. Q20:
    Gamba: Muñoz claims that the Southwest Hopeville Neighbors…Method of Reasoning

    Muñoz is wrong to say that people in the city oppose the new water system.

  21. Q21:
    Driver: My friends say I will one day have an accident…Flawed Reasoning

    I will have a lower chance of an accident in a minivan.

  22. Q22:
    Editorialist: News media rarely cover local politics…Most Strongly Supported

    Lack of news AND secret politics ➞ local politicians isolated from electorate ➞ less chance resident participation will get positive official response ➞ less resident participation

    ~~N~~ AND SP ➞ PI ➞ ~~OR~~ ➞ ~~RP~~

    Note: I’ve drawn these as a conditional statement.

  23. Q23:
    Philosopher: An action is morally right if it would be…Sufficient Assumption

    Well being unchanged ➞ right

  24. Q24:
    Car companies solicit consumer information on such human…Principle – Conform

    Designer interaction is better than survey data.

  25. Q25:
    During the nineteenth century, the French academy of art…Paradox

    The French academy sponsored both painting and sculpture.

About this section

Originally Section 2 of the June 2007 LSAT, administered in June 2007.

Question types

Sufficient Assumption4 · 16%
Flawed Reasoning3 · 12%
Weaken3 · 12%
Complete the Argument2 · 8%
Identify the Conclusion2 · 8%
Most Strongly Supported2 · 8%
Flawed Parallel Reasoning1 · 4%
Method of Reasoning1 · 4%
Paradox1 · 4%
Parallel Reasoning1 · 4%
Point at Issue1 · 4%
Principle – Conform1 · 4%
Principle – Conform1 · 4%
Role in Argument1 · 4%
Strengthen – Exception1 · 4%

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

Section 1: Reading Comprehension
Section 3: Logical Reasoning
All PrepTest 123 explanations

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