1. They help the setting become more realistic.
2. They could even help the main character on stage feel less anxious, since they're not the only one up there.
Answer: In the film version, the viewer sees "Charles" sitting on a stool in the corner of the classroom.
Explanation:
There are many different movies with the same name as in your questions so I do not know what is the text and film version that you are thinking of but I have found the answer on the internet that is telling the students that the right answer is considering Charles as one of the characters who is sitting on a stool in the corner of the classroom.
