The correct answer is A. Most adverbs end in -ly, however there are some, such as always, often, sometimes, never, and seldom that go against that rule.
The word "falling" is a present participle of the verb "to fall".
Past participle would be "fallen".
Past would be "fell".
Base form would be "fall"
Which only leaves "falling" as the possible answer.
no cap means i am not lying
