What is exposition? a. the beginning of a story, when the characters are introduced b. the ending of a story that shows how the central problem is solved c. an exciting moment in the story when a character faces up to a problem d. the place and time that a story takes place

Option a. the beginning of a story, when the characters are introduced

Exposition is the insertion of the important background within a story. It is the process of scattering information through the text. Incluing is a technique in which the reader is gradually exposed to background  information about the world in which the story is set. The idea is to clue the readers into the world the author is building them without being aware of it.