Please help me it is due today

This device blocks an opening along the base/floor of stairs or other walking or working surfaces where materials or body parts might otherwise inadvertently fall through. it should be 4 inches high, with not more than ¼ inch clearance above the floor

Which of these excerpts is most clearly an example of narrative poetry? a. “in xanadu did kubla khan/a stately pleasure dome decree…” b. “and all that’s best of dark and bright/meet in her aspect and her eyes…” c. “who can contemplate fame through clouds unfold/the star which rises…” d. “one shade the more, one ray the less/had half impaired the nameless grace…”

Those are books that need to be returned to the library what is the antecedent of the pronoun those