Is the underlined word(s) a participle or a verb? read the sentence. where is that (banging) -underlined word-noise coming from? which best identifies the function of the underlined word?

The answer is definitely a Verb

i mean think about it, "banging" is a loud sound and the main meaning of verb is something like hear, become, happen, or a action. Plus, the sentence says "where is that "banging"  noise coming from"

So obviously, its something they heard, IF it were a noun it would probably be a place, thing, person.

But overall, the answer is Verb. Hope this answers your question!

answer; ///i believe that the correct answer is (a) poorly repaired