Answer:
“P begins to tell Junior about teaching Mary, Junior's sister. He says she was the smartest kid he ever taught—smarter even than Junior. She wanted to be a romance novelist.”
Explanation:
Part A:
D, It suggests that the speaker is unhappy or troubled.
Part B:
A, He cannot sleep and needs to get out of the house.
A clue to cause and effect would be the word "since" as it starts a cause for something,a reason for something to happen