Logical Reasoning

PT131 · S2 · Q10 Chemical fertilizers not only

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Chemical fertilizers not only create potential health hazards, they also destroy earthworms, which are highly beneficial to soil.

Premise

The castings earthworms leave behind are much richer than the soil they ingest.

Intermediate Conclusion

A garden rich in earthworms is more fertile than a garden without them.

Intermediate Conclusion

Earthworms are highly beneficial to soil.

Premise

Chemical fertilizers destroy earthworms.

Main Conclusion

For this reason alone the use of chemical fertilizers should be avoided.

10.

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

  1. Earthworms are highly beneficial to

    Intermediate Conclusion

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

    3% picked this

  2. Chemical fertilizers destroy earthworms.

    Premise

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

    2% picked this

  3. The castings that earthworms leave

    Premise

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

    1% picked this

  4. Correct

    The use of chemical fertilizers

    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.

    90% picked this

  5. A garden rich in earthworms

    Intermediate Conclusion

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

    5% picked this

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