An author uses characterization to?

Characterization can be direct, as when an author tells readers what a character is like (e.g. "George was cunning and greedy.") or indirect, as when an author shows what a character is like by portraying his or her actions, speech, or thoughts 

TO explain different characters and set building blocks for the plot; characterization is very important to a storyline

Hello!

I think u didn't provide us neither the whole text nor options; however, I know the text and, if options are these:

A. Heart-leaves of lilac all over New England,

B.Because my leaves are of it,

C.Because it is my country

D.And sing of it with my own voice

Then,  correct answer is: A. Heart-leaves of lilac all over New England

Hope this helps!