Why does antony choose to repeat the word honourable throughout the speech? to favorably compare caesar and brutus to ensure that listeners understand the meaning of this term to quote brutus and his claims accurately to make listeners think critically about brutus and his actions?

Had to look for the missing details and here is the answer. 
The passage attached to this question is actually a speech made by Marc Antony relating to the death of Julius Caesar. And based on this based, the reason why the speaker chooses to reiterate the word "honourable" throughout the speech is to favorably compare Brutus and Caesar. The answer would be the first option.

Anthony repeatably mentions of Brutus' honor in a sarcastic manner, meant to cause the crowd to evaluate his actions critically. He describes the blood and gore related to the murder of Caesar, and by doing so also describes the perpetrators "honor". These statements contrast themselves, but still allow Anthony to say that he never directly attacked the image of Brutus. The correct answer is D.