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Critical Reasoning: Boldface Type Questions

The Larynxtown industrial zone is infested with rats. The municipality introduced DDA poison, improving the situation, but resulting in the death of many Klacktop birds. To prevent the death of the Klacktops, DDB poison was introduced which resulted in the death of many Gellowtop frogs. Some of the public believe that since the rat infestation poses a significant threat to the Larynxtown citizens' health, any measures, irrelevant of the harm caused to wildlife, must be taken to cease it. The industrial zone neighbors the habitats of certain wildlife species that are protected by law so the introduction of poisons is probably not the solution to this particular infestation.

In the argument given, the two portions in boldface play which of the following roles?

Incorrect.

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After reviewing the breakdown, we can see that the first boldface portion opposes the argument's main position. You can immediately eliminate answer choices that incorrectly define the first boldface part; do not waste time reading the rest.

Incorrect.

[[snippet]]



While this answer choice defines the first boldface part correctly, it defines the second incorrectly. The second boldface portion does not contain any evidence but is, in fact, a conclusion based on the provided evidence.

Incorrect.

[[snippet]]



While this answer choice defines the first boldface part correctly, it defines the second incorrectly. The second boldface portion represents the main position of the argument. Therefore, the two boldface portions actually oppose one another.

Incorrect.

[[snippet]]



While the first boldface portion includes evidence, it is not in support of the argument's conclusion. On the contrary, it supports the conclusion of some of the public which opposes to the argument's position. You can immediately eliminate answer choices that incorrectly define the first boldface part; do not waste time reading the rest.

Superb work!

[[snippet]]



Since the argument's conclusion is for position 2, it can be taken as the bottom line-argument's position. Since the first boldface supports using poisons, it can be taken as going against the argument's main position.

The first provides support for the argument's main position; the second objects to this position.
The first states a position that challenges that supported by the argument's conclusion; the second is evidence used to further support that conclusion.
The first challenges the main position of the argument; the second gives support to that challenge.
The first describes evidence that supports the argument's conclusion; the second is that conclusion.
The first is a position that opposes that established by the argument; the second is a conclusion to the argument.