What do you believe the allusion to the “fallen angel” means in this passage?

How can i but "as william walking with his wife was seen"as a short sentnse

Which best explains this excerpt’s purpose in the novel’s plot structure? the excerpt creates conflict between characters as part of the rising action. the excerpt provides background information on a character as part of the exposition. the excerpt returns a character to equilibrium as part of the falling action. the excerpt is the point of greatest tension and acts as the climax.

In the poem, collins compares his love to a pigeon on a generals head