Can you explain more please explain more questions
In this poem, Pound is comparing "faces in the crowd" to petals that are laying against a tree branch.
This is exactly what he says in the poem - "petals on a wet, black bough." A bough is the main branch of a tree, so this is definitely the only appropriate answer in this case. He wants to say that people resemble these petals.
Answer:
A sentence fragment is a group of words used as a sentence that lacks a crucial element that makes it an incomplete thought
A comma splice on the other hand is a mistake when two independent clauses are spliced together with only a comma.