The correct answer is option A. "the beginning". In literature, a falling action is defined as the events that happens right after the climax has ended. In the beginning of "The Black Cat" by Edgar Allan Poe the narrator addresses the audience to explain why he is gonna lose is life tomorrow, this implies that the story starts when the climax has ended and the narrator is gonna explained what happened.
In AP tests, yes. But in general, no
Yes they can prevent possible life threatening diseases
"An" is one of two indefinite articles.
strange, surprised, jumped