What is setting?
what is theme?
what is plot?
what is problem?
what is main idea?

Setting: Is the place or type of surroundings where something is positioned or where an event takes place.
Theme: A theme could be the an idea that recurs in or pervades a work of art or literature, but it could also be a general message or statement about a subject that all the elements of a story or a рoem work together to develoр.
Plot: Is a secret plan or scheme to accomplish some purpose, especially a hostile, unlawful, or evil purpose.
Problem: A matter or situation regarded as unwelcome or harmful and needing to be dealt with and overcome by the main characters.
Main Idea: The main idea of a passage, also called the central idea or main point, is the primary concept of a passage. It represents the essential point that the author is trying to convey. The main idea may be clearly stated as a sentence. Ask Answer Influence Profile

According to a gossip website they are around 40 .. i hope it's not a question from your book!