Answer: The setting of a book helps develop a theme by giving key points of information that are critical to the story point. Time periods and locations are examples of settings that can contribute to the theme. Without specific details, some points of the story would be vastly different, or would not exist during that time period/location at all. Overall, it established the mood and energy of the story.
People talk, read, do homework/ study/ work, take naps, rest and do activities to keep themselves entertained!