C. performers
Comedians, actors, and musicians all fall under the umbrella of being a performer in some way, making this the most general category here!
Mr. Frank says this line when they are all fighting.
He is saying that they don't need the Nazis to destroy them. They are destroying themselves by fighting. In this scene, they were fighting over food, which was certainly important -- however, Mr. Frank is saying that the good of all must be considered before individual needs.
Mr. Frank is saying that in order to survive, some sacrifice must be made, and the fighting must be stopped.
The puppy, who's name is fluffy, ran across the field.