I'm not good in auditory tests, but hands-on tests I can handle. Might not be the best, F.Y.I
Answer:
A concentrated site or installation, the destruction or capture of which would seriously affect the war effort or the success of operations. Dictionary of Military and Associated Terms.
Explanation:
Hope it can help you lovelots
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.)
