The appositive phrase is not Maya Lin, like the comment above me stated, but it is B) Chinese-American.
An appositive phrase is usually separated from the rest of the sentence by commas, and it describes the subject, which here is Maya Lin.
Yes you can use i for your thesis
I believe the sentence is too vague.
Answer would be C I'm pretty sure.
An Adjectival Phrase - a group of words headed by an adjective that modifies a noun.
An Adjective - a word or phrase naming an attribute, added to or grammatically related to a noun to modify or describe it.
A Noun - a word (other than a pronoun) used to identify any of a class of people, places, or things
