Logical ReasoningDifficulty: Easy

PT101 S2 Q15 Explanation

The authors of a recent article examined warnings

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsMain Conclusion

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Full official LSAT questions are available through LawHub. This page provides LSAT Lab's explanation, strategy, and review tools without republishing the full official question.

Stimulus

The authors of a recent article examined warnings of an impending wave of extinctions of animal species within the next 100 years. These authors say that no evidence exists to support the idea that the rate of extinction of animal species is now accelerating. They are wrong, however. Consider only the data the twentieth century, 13 between 1900 and 1950, and 27 since 1950.

What this question is testing

Main Conclusion

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
15.

Which one of the following is the main point of

Answer choices

  1. Correct91% picked this

    There is evidence that the rate of extinction of animal species

    Why this is right

    Answer A is correct.

    Skill tested: Main Conclusion · how this choice captures the argument's function is the move to repeat next time.

  2. Trap4% picked this

    The future rate of extinction of animal species cannot be determined

  3. Trap4% picked this

    The rate of extinction of North American fishes is parallel to the rate of extinction of all

  4. Trap1% picked this

    Forty species and subspecies of North American fishes have vanished in

  5. Trap1% picked this

    A substantial number of fish species are in danger of

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