I would say B. C could also be an option, but I think B makes the most sense :)
Answer:
non fiction books are books that have facts and are based off of real events
Explanation:
their purpose is to educate the reader on the facts that are being told in the book. facts and dates are a main role in a non fiction book.
hope this helps.
Answer:
an adverb
Explanation:
Swiftly would be an adverb because it is describing the verb flies. An adverb is any word that describes a verb. A helpful way to help find them is that they usually end with an -ly, but remember that not all adverbs end in -ly.