Which of the below best fits the definition of AMEND? A) something that happens randomly
B) to revise something written so that it is more fair or appropriate.
C) to pull together money
D) to provide a rational basis for doing something

I think B

Explanation:

Reason why B is because Amend mean make minor changes to (a text, piece of legislation, etc.) in order to make it fairer or more accurate, or to reflect changing circumstances.

the answer is:

when will (v) the books (n) be (v) due?

nouns refer to people (other than pronouns), places and things, whereas verbs describe actions and are usually part of the predicate of a sentence. finally, pronouns can work as nouns and identify the participants in speech.

in the example sentence, "will" is a verb part or auxiliary verb, "be" is an infinitive verb and "books" is a plural noun.