Logical Reasoning

PT131 · S1 · Q3 In some places, iceberg

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In some places, iceberg lilies are the mainstay of grizzly bears' summer diets.

Apparent Paradox

Grizzly bears foraging for iceberg lilies annually destroy a large percentage of the lilies.

Scientists have determined that the bears’ feeding habits actually promote the survival of iceberg lilies.

Evaluate

One explanation for how it could be that grizzly bears’ feeding habits actually promote the survival of iceberg lilies is that they provide population control for iceberg lilies that benefits that particular plant. Another possible explanation is that they serve a vital role in the reproduction of iceberg lilies—possibly helping with pollination or with spreading fertilized seeds.

3.

Which one of the following, if true, most helps to resolve the apparent discrepancy in the statements above?

  1. When grizzly bears forage for

    Deepens the Paradox

    This makes it less clear how grizzly bears promote the survival of iceberg lilies.

    1% picked this

  2. Correct

    Iceberg lilies produce so many

    Why this is right

    This matches the prediction that grizzly bears help with population control in a way that benefits iceberg lilies.

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

    90% picked this

  3. A significantly smaller number of

    Deepens the Paradox

    This makes it less clear how grizzly bears promote the survival of iceberg lilies.

    5% picked this

  4. The geographic regions in which

    Too Weak

    This could mean that grizzly bears somehow benefit iceberg lilies (though this doesn’t say how) or it could also be the case that grizzly bears simply are attracted to the abundance of iceberg lilies.

    4% picked this

  5. Iceberg lilies contain plentiful amounts

    Reversal

    This explains how iceberg lilies promote the survival of grizzly bears, but not the other way around.

    1% picked this

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