The options missing are the follwing:
a. they are about to hold a meeting.
b. they are upset by the buzzer.
c. they are about to watch a basketball game.
d. they are all young and excited.
Answer:
c. they are about to watch a basketball game.
Explanation:
The echo of the balls reverberating, the sound of the sneakers squeaking and of the whistles blowing suggest that there are people practicing in a basketball court. Also, we can assume that the characters are in a basketball court about to watch a basketball game because there are people chatting loudly on the bleachers but they all stop talking and moving at the sound of the buzzer to pay attention to an event they have been waiting for: the game.
