The correct answer is D, because there are three independent clauses in this sentence, all of the clauses are independent. A means that there is at least one dependent clause, which is not the case here, and B means the same. C mean that there is only one independent clause in the sentence.
Answer:
Because William built the windmill.
He wants Montag to burn his own house down because
1. Montag is forced by Beatty, with the consequence of death
2. Montag is in possession of books, which is in direct violation of the law.
However, Montag feels both angry and joyful at destroying the parlour, which he hated throughout the story.
