Which of the following are common text structures for work of non- fiction

I and III

Explanation:

In a nonfiction writing piece (like a report or a reference book), it's common to address a problem and its solutions, as well as comparing things to each other.  You normally  won't see those structures in a fictional writing piece (like a novel).

In a fiction writing, concepts like multiple plotlines and flashback are very common and help keep the reader on the edge, unaware of what's coming.  Such 'drama' doesn't have its place inside a nonfiction piece.

the figurative meanings of these lines are questioning the tyger's strength and beauty. the meaning contributes to the overall message of them poem because it is explaining how strong the tyger is.

now just elaborate off of that. : )