What is an example of expostion?

Exposition is a narrative device used to provide background information essential for understanding the story. An example of exposition can be found in the opening scenes of a novel, where the author introduces the main characters, their relationships, and the setting. For instance, in "Harry Potter and the Sorcerer’s Stone," the early chapters describe Harry’s life with the Dursleys and the existence of the wizarding world, setting the stage for the adventure to come. This background helps readers grasp the context and stakes of the plot.