The natural fondness led to the domestication of pets like dogs. ... Many people no longer care about what happens to other humans The loyalty and the positive behaviors from pets make people feel comfortable around them.
I hope you understand.
Answer:
-They become best friends
-Murder
-They fall in love
-You see the 2 people point of view and see what they think of each other and why they hate each other
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.