I think the answer is B because it mentioned about speed in the text.
A.
generally, you can tell between passive and active if there is or isn't a "were" or "was" in between the subject and the verb.
if B was active, it would be: The young man offered assistance
“Fish is to fin as a bird to a wing”
Jennifer explained that an AGGREGATE of electronic health information usually included documents from two or more different health facilities.
