I believe it is B - It provides momentum throughout the poem.
(please let me know if I am wrong, also I apologize in advanced just in case it is wrong.)
A concrete detail is one that is very important or crucial in relation to the text. It usually provides important facts or information about the topic at hand. <span />
Answer:
hearing is the passive intake of sound while listening is the act of intentionally working to comprehend the sounds (e.g., words or background noises) you hear.
Explanation: