Exposition is when the characters, setting, etc is being introduced. rising action are is the main events (basically what happens) in the story up to the climax which is the highest point of tension/interest. falling action is basically the after math of the climax, and denouement is basically the resolution of the story. Where the character kind of reflects on the events that happened.
Answer: B is the answer
Explanation: the sentence is in the past so you have to put had it's kinda hard to explain