I think it is a noun phrase, and not appositive.
C
C
B
B
A
C
C
B
D
A
Didn't ever read this so just looking at the question I went with what possibly could've made sense to the story<span />
A speech urging students to elect you as class president
Answer:
C. I don't like snakes.
Explanation:
An independent clause is a phrase that can stand on its own as a sentence. "I don't like snakes" has a subject, verb, and noun; therefore it is a complete sentence. None of the other answer choices are complete sentences; they are dependent clauses.