KAPLAN OFFICIAL EXPLANATION(A) Strengthen the Argument
A prediction is strengthened when you assure circumstances that favor it.
The author of this argument is trying to convince us about Jackie’s musical preferences, predicting that she will like the new album by The Cruel Herd. Why? Well, “since” at the beginning of the first sentence signals the evidence, and it’s all based on Jackie’s existing affinity for the music of Moral Vacuum. The author goes on to tell us about similarities between the two bands: they have similar sounds and instrumentation, and they also feature similar lyrics. So, in order for these factors to support the claim that Jackie will enjoy The Cruel Herd, these factors (style, arrangement, lyrics) must be the reasons why she likes Moral Vacuum in the first place. This assumption is integral to the prediction in the author’s conclusion.
(A) makes the prediction a little more likely by indicating that Cruel Herd’s music will resemble Moral Vacuum’s even more now that Cruel Herd has enlisted Moral Vacuum’s musical arranger.
If
(B) is true, The Cruel Herd’s production quality may very well improve, but that doesn’t strengthen the idea that Jackie will enjoy it. Production quality was not one of Jackie’s reasons for liking Moral Vacuum.
(C) Mutual popularity with students doesn’t ensure a similarity in music, arrangement or lyrics. Out of scope.
(D) broadens the scope too much. Knowing that Jackie listens to rock music regularly doesn’t strengthen anything.
(E) actually weakens the argument by suggesting that the things Jackie loves most about Moral Vacuum— somber lyrics, a strong political awareness—are not things that Moral Vacuum has in common with The Cruel Herd. Always expect a 180 choice like this on a Strengthen or Weaken question.