The form that Brutus’ speech uses is prose. Option B is correct.
An example of Brutu's prose may be: "Romans, countrymen, and lovers! Hear me for my cause."
Prose refers to a form of language that shows a natural flow of speech and grammatical structure instead of a regular rhythmic structure as in traditional poetry, where the common unit of verse is based on rhyme or metre. To put it sumply, prose is a written or spoken language in its ordinary form, without metrical structure.