papillon86 wrote:
14. Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.
In which of the following is the reasoning most similar to that of Dr. A?
(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.
(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.
(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.
(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.
(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.
the question stem follows a circular reasoning.
simplify the question stem as follows:
*X is useless
*journal says X is effective
*journal is wrong because X is ineffective(or useless).
(the only reason that Dr. A mentions to support his claim is that "The new influenza vaccine is useless.")
now if we see the answers it is clear that only C follows circular reasoning.
(the only reason Wingzz tennis balls perform better is because they are best.)
B does not follow a circular reasoning, its reasoning is logical,
X recommends Y.
i don't trust Y.
so i won't buy Y.
(there is a proper reason to not buy Y)
IMO: C
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