Hi eyunni,
Thank you for your question. After looking over each answer quickly, there are a couple things that jump out to me:
1. the language of James Merrill / James Merril's language
2. the beginning of each answer: Like Auden / Like Auden's / As with Auden / As is Auden's
Let's start with #1 on the list, since it might narrow down our answers a bit. If you were to say "the language of James Merrill," a reader may misread this to say that there is a language spoken ONLY by James Merrill, or that James Merrill is a LOCATION where people speak a certain language. To better show that we're talking about possession, let's stick with only the answers that clearly show possession by saying "James Merrill's language." Thus, we can rule out answers A & E.
Now that we've narrowed it down to answers B, C, & D, let's look at #2 on the list - how each answer begins. To find the correct answer, we need to find the answer that uses parallel structure, in particular with each author's name:
(B) Like
Auden,
James Merrill’s language (WRONG = not parallel)
(C) Like
Auden’s,
James Merrill’s language (CORRECT = parallel)
(D) As with
Auden,
James Merrill’s language (WRONG = not parallel)
As you can see, answer B is correct because it shows proper possession and uses parallel structure.