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#27212
Complete Question Explanation

Parallel Flaw. The correct answer choice is (D)


The flaw reasoning in this stimulus can be summed up as follows: it is possible to achieve two goals/things in isolation, so it must be possible to achieve both at once. Pay particular attention to the language in the argument, as it deals with possibility (“we can”) as opposed to certainty (“we will”). The correct answer must contain two independent events that are possible, and then conclude that the two events can occur together at once.

Answer choice (A): This answer choice deals with absolutes/certainty (“there is no dishwasher...,” “no dishwasher currently available...”), so it does not parallel the possibility presented in the stimulus.

Answer choice (B): This conclusion is causal, which does not parallel the conclusion from the stimulus (one possibility is not said to cause the other in the stimulus).

Answer choice (C): This conclusion is absolute (“it is”), so it does not match the possibility in the stimulus.

Answer choice (D): This is the correct answer choice. Two possibilities are given independently (possible to write a best-selling novel; possible to write a novel that appeals to critics), and then the conclusion is that it is possible two do both simultaneously (note: wide readership = best-selling).

Answer choice (E): This conclusion contains a prediction about the future: there will someday be a machine that brews coffee and toasts bread. The stimulus does not say that someday there will be a car with good fuel efficiency that meets safety standards (only that we can make one), so this answer does not parallel the conclusion.
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 zsg2@cornell.edu
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#87206
One thing that tripped me up here with (D) was that I read the first sentence of the answer choice as "it is possible to write a best-selling novel and it is possible to write one [best-selling novel; as opposed to novel] that appeals to the critics. Hence, I thought the two scenarios were actually linked and not independent so the conclusion followed logically and wouldn't therefore match the flaw in the stimulus. Any suggestions for making sure I don't make this mistake again?
 Robert Carroll
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#87219
Zac,

It takes really precise reading of the grammar of the statement to distinguish the two cases. Compare:

"It is possible to miss 5 questions on the exam and get an A."

to:

"It is possible to miss 5 questions on the exam and it is possible to get an A."

The first statement is saying that the same person could miss 5 questions and get an A. The second statement is kind of a silly, useless statement: it's saying that a person could miss 5 questions, and that a person, possibly a completely different one, could get an A. The second statement doesn't force the combination to be possible. That second statement is pretty much what we have in answer choice (D), and the stimulus, for this question, and that's why the conclusion of each is flawed in the same way.

In short, where's the "and"? "It is possible to A and B" is different from "It is possible to A and it is possible to B". Hope that helps!

Robert Carroll

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