You take a story and explain the entire thing with only a couple paragraphs, and you don't want to give away any special details that way a person can know a little about the book and want to read it. Like a "A dog and His Ball" is about a lost dog who doesn't have a family and finds an old ball to play with. You would put this on the back of a book and then people would be drawn to read this book. ( I just made something up so it may not make sense sorry.)
I'm not really sure I understand what you are asking, but I tried to answer the best I could, please let me know if this isn't what you meant.
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.
Literature, however, can be said to be the mirror of life, because it reflects and comments on aspects of things people encounter in their daily lives. Even futuristic novels such as The Hunger Games can reflect life, despite the fact that its world is alien to the modern human being.
Your question is incomplete because you have not provided the answer choices, which are the following:
A) he might have been so absorbed in whatever it was he had found that may call made no impression on him
B) I stood there wondering what to do. Should I go down to the beach?
C) I had always loved and protected K. as if he had been my own little brother.
D) I probably could have run over and dragged him out of reach of the wave
Answer:
D) I probably could have run over and dragged him out of reach of the wave
Explanation:
In "The Seventh Man," by Japanese author Haruki Murakami, the protagonist tells the story of how he lost his best friend during a typhon. Thus, he explains anguishly that he has not been able to put up with that episode, in which his friend is dragged by a huge wave and he is not able to save him. As a result, his experience is so dramatic that it has affected his personal and professional life.