In contextualizing the Civil War, Lincoln urges listeners to recall the principles upon which
the United States was founded. In the context of this
article, how has America changed over
time?

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )

a biography is a genre that mainly accounts somebody's life and that is written by somebody else. this genre supports sonia nazario's desire to share enrique's life because she can fully inform readers of his entire emotional journey.

in a biography, an author can share the readers almost everything about a person's life, or just one key event or personal aspect the author is interested in telling, like in this specific case in which sonia nazario is centered in enrique's emotional journey.

the answer can be "credo" it means to believe = the word credo means "an official statement of beliefs"

i would pick a. i think this is more of a personal question though.