Answer:
it is an adverb phrase modifying came
Answer be C.
Samantha is creating an article from the 1700s and 1800s. One source provides information from the 1900s to modern day, therefore doesn't work in this case. So the choice of C doesn't work.
Reveal part of the backstory that occurs during the flashback.
Answer:
b, he shows multiple times his ability to comprehend English