Logical Reasoning

PT16 · S3 · Q21 The similarity between ichthyosaurs and fish

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The similarity between ichthyosaurs and fish is an example of convergence, a process by which different classes of organisms adapt to the same environment by independently developing one or more similar external body features.

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.

21.

If the statements above are true, which one of the following is an inference that can be properly drawn on the basis of them?

  1. The members of a single

    Trap

    1% picked this

  2. The members of a single

    Trap

    4% picked this

  3. It is only as a

    Trap

    10% picked this

  4. Correct

    An organism does not necessarily

    Why this is right

    Answer D is correct.

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

    85% picked this

  5. Whenever two classes of organisms

    Trap

    1% picked this

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