Question

The apparition of these faces in the crowd; Petals on a wet, black bough. In this poem, Pound is comparing “faces in the crowd” to petals that are laying against a tree branch. drowning in the rain. withstanding a storm. floating through the night sky.

Answer 1

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.