Answer:
B. To explain why your audience should agree with your opinion
Explanation:
Knowing what type of music you are listening to
D is most definitly the right answer bro bro
The correct answer would be B. Why? The direct object is David, so not that, them is not included in a prepositional phrase, so it's not an object of a preposition, and David is the subject, and not them. Hope this helps!
Have a fantabulous day! :)