Logical Reasoning

PT105 · S4 · Q9 To allay public concern about

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To allay public concern about chemicals that are leaking into a river from a chemical company's long ­established dump, a company representative said, "Federal law requires that every new chemical be tested for safety before it is put onto the market.

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

9.

Which one of the following, if true, most seriously weakens the representative's implied argument that the public need not be concerned about the leak?

  1. When pharmaceutical substances are tested

    Trap

    13% picked this

  2. Leakage from the dump has

    Trap

    3% picked this

  3. Correct

    Before the federal law requiring

    Why this is right

    Answer C is correct.

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

    78% picked this

  4. The concentration of chemicals leaking

    Trap

    3% picked this

  5. The water in the river

    Trap

    2% picked this

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