last-13-1-20

20The new perfume Aurora smells worse to Joan than any comparably priced perfume, and none of her friend likes the smell of Aurora as much s the smell of other perfumes. However, she and her friends must have a defect in their sense of smell, since Professor Jameson prefers the smell of Aurora to that of any other perfume and she is one of the world’s foremost experts on the physiology of smell0. The reasoning is flawed because it

(A) calls into question the truthfulness of the opponent rather than addressing the point issue.

(B) ignore the well-known fact that someone can prefer one thing to another without liking either very much

(C) fails to establish that there is widespread agreement among the experts in the field

(D) makes an illegitimate appeal to the authority of an expert

(E) misrepresents the position against when it is directed

why d?

The reasoning implied in the stimulus is to draw a conclusion in respect of physiology on the ground of personal prefernce. However, it is obvious there is a logic leap between personal preference and the matter of physiology. Even though the professor is expert on the physiology of smell, but it is hard to say that his preference is right but those who have different prefence from his is wrong. Thus, in this case Professor Jameson's expertise cannot provide a justification for choice of different preferences.

In other words, the composer of the stimulus makes a assumption that the difference in the physiology of smell is the only reason for different preferences to perfume.