This is a hard one and I can see why you decided to post it here. B is most definitely wrong but the other three are all neck and neck. There are both even pros and cons of A and C but I think it would be more reasonable to adopt a general routine. So I think the answer would be C.
Answer:He wants the audience to hear William Kamkwamba speak.
Explanation:
Neighbor is the subject
Lives is the verb
