Logical Reasoning

PT10 · S4 · Q8 X: Since many chemicals

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X: Since many chemicals useful for agriculture and medicine derive from rare or endangered plant species, it is likely that many plant species that are now extinct could have provided us with substances that would have been a boon to humanity.

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

8.

X’s argument relies on which one of the following assumptions?

  1. Medicine would now be more

    Trap

    16% picked this

  2. All living things exist to

    Trap

    5% picked this

  3. Correct

    The use of rare and

    Why this is right

    Answer C is correct.

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

    70% picked this

  4. The only way to persuade

    Trap

    5% picked this

  5. Few, if any, plant species

    Trap

    5% picked this

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