North Atlantic treaty organization
The answer is: Impersonating and remaining silent.
In the passage, the narrator describes Tom Stoppard's play "Rosencrantz and Guildenstern Are Dead." Both originally Shakespearean characters from "Hamlet," Stoppard develops them further in their own play, in which they "pass the time by impersonating other characters" and "remaining silent for long periods of time."
Bella didn’t study and whatever is after because, because it is saying why she did not study.
I am willing to help you out however the question is incomplete