Answer:
Rhetoric.
Step-by-step explanation:
Rhetoric is a literary device that gives the speaker of the speech the persuasive nature of what he's trying to say. This act of speaking or writing, the figurative speech, enables the speaker to have the persuasive power to sway the opinion of the listeners in his favor.
The given excerpt is from Act III scene ii is spoken by Brutus to the masses who were assembled to listen to their leaders talk about the death of Julius Caesar. Brutus took this opportunity to try to change/influence the people to sympathize with his actions of murdering their beloved leader Caesar. He tried to justify his deed, making it look as if the whole murdering of Caesar was done for the benefit of the people. Giving the impression that the whole conspiracy was his sole idea, and given his position as one of the trusted friend of Caesar himself, Brutus seems to claim that the death of Caesar is a valid thing and that it was for the good of everyone. Thus, Brutus uses the rhetorical language to attempt to justify his own misdeed of murdering his friend and the ruler, Julius Caesar.