Carcass wrote:
Argument Construction
To determine what roles the two portions in boldface play, it is useful to look first for certain “inference indicator” words: words that indicate that what follows is a premise (words like because and since) or a conclusion (words like thus and therefore).
Here, there is only one, therefore; it immediately precedes the second boldfaced portion. This indicates that that portion is a conclusion. Because of this, we can effectively rule out answer choice A.
However, we must investigate the rest of the argument to determine whether this is the main conclusion. If it is, we can rule out answer choice E as well. Alternatively, it may be an intermediate conclusion, in which case E would be the correct answer.
To determine which sort of conclusion it is, ask whether this conclusion is used in support of another claim in the argument. This conclusion is not, which makes it the main conclusion. This rules out answer choice E.
To make a correct choice among options B, C, and D, we must determine the role of the first highlighted portion.
A. This choice is incorrect because the second boldfaced portion is a conclusion drawn in the argument. It is not, of course, a hypothesis that the first boldfaced portion is used to undermine. Furthermore, the argument presents no data to confirm the first boldfaced portion.
B. Correct. The first boldfaced portion is not a conclusion; it is merely an assertion that is not supported by any claims presented in the argument. This portion, along with the statement immediately following it, are offered in support of the second boldfaced portion. This second boldfaced portion is the argument's main conclusion.
C. The first boldfaced portion does not undermine a position that the argument is directed against. In fact, the argument is not explicitly directed against any position. Note that the argument is rhetorically positive, arguing for a specific position rather than against one.
D. The argument provides no evidence in support of the first boldfaced position.
E. As noted above, this cannot be the correct answer because the second boldfaced portion is in fact the main conclusion of the argument.
The correct answer is B.
Isn't the fact that the spacings were good enough for people to play from third through sixth note of the diatonic scale a good enough evidence to support the first boldface as a prelimianary conclusion? I had D as the correct answer