Here's a simple way to break this one down.
Conclusion: J will like Cruel Herd's music
Premise: She's a big fan of Moral Vacuum's music.
Cruel heard plays complex rock music, acoustic instrumentation, harmonic sophistication..
Cruel Herd's lyrics are like some of MV's best.
(A) is right because it ties MV's music (which she's a big fan of) directly to CH's music, the conclusion that she'll like CH's music is strengthened. This is much better than the vague "all her preferred music is rock" of (D)
(B) "widely employed?" Great. How does that relate to Jackie?
(C) Students at Jackie's university? There is no evidence in the argument that Jackie's taste is like that of her peers.
(D) So all the music she likes is rock. So what? This doesn't do much at all to strengthen the idea that she will like this particular band. Sure, maybe it's a better choice than "all the music she likes is polka," but it's not the best choice. The best choice will utilize the logic of the argument in some way.
(E) No connection to CH at all. Eliminate!
#officialexplanation