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.
She's applying emphasis onto the word. Christie wants the word dramatic to really be out there. Christie is implying that __ is very dramatic. This repetition makes the word stick in our heads as the main focus.
A. The mystery around the monkey's paw is introduced
Hints of this lie in the adjectives such as "curiously" and the mention of "magic" which tells the reader that there might be something more to monkey's paw, and that maybe we should be curious.