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Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.
Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.
Predict what a right answer must do, then test each choice against the conclusion-evidence gap.
Which one of the following, if true, does most to explain why the water of Lake Laberge currently contains high levels of toxaphene?
Levels of pesticides in the
Why this is right
Answer A is correct.
Skill tested: Paradox · how this choice captures the argument's function is the move to repeat next time.
98% picked this
Lake Laberge’s water contains high
0% picked this
Toxic chemicals usually do not
0% picked this
North American manufacturers opposed banning
1% picked this
Toxic chemicals become more readily
1% picked this
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