Logical ReasoningDifficulty: Easy

PT131 S2 Q10 Explanation

Chemical fertilizers not only

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

TopicsMain Conclusion

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Stimulus

Chemical fertilizers not only create potential health hazards, they also destroy earthworms, which are highly beneficial to soil. For this reason alone the use of chemical fertilizers should be avoided. The castings earthworms leave behind are much richer than the soil they earthworms much more fertile than a garden without them.

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
10.

Which one of the following most accurately expresses the main conclusion of

Answer choices

  1. Intermediate Conclusion3% picked this

    Earthworms are highly beneficial to

    This is an intermediate conclusion that is supported by another intermediate conclusion and that also supports the main conclusion.

  2. Premise1% picked this

    Chemical fertilizers destroy

    This is a premise that supports the argument’s main conclusion.

  3. Premise1% picked this

    The castings that earthworms leave behind are much richer than the

    This is a premise that supports one of the argument’s intermediate conclusions.

  4. Correct90% picked this

    The use of chemical fertilizers should

    Why this is right

    This best paraphrases the argument’s main point.

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

  5. Intermediate Conclusion5% picked this

    A garden rich in earthworms is much more fertile than a garden that is

    This is an intermediate conclusion that is supported by a premise and that also supports another intermediate conclusion.

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