Which term refers to a scene in a movie or novel set earlier than the main story?

The term that refers to a scene in a movie or novel set earlier than the main story is flashback. Flashbacks are narrative devices that allow the audience to revisit past events experienced by the characters. They often provide context, enhance character development, and reveal crucial background information that relates to the current events of the story. By presenting these earlier moments, flashbacks can help the audience understand characters' motivations and the circumstances that shape the plot.

The other terms, while related to storytelling, serve different purposes. A prologue introduces the main story and sets the stage for what is to come, typically occurring before the main narrative starts. An interlude usually serves as a break or pause in the narrative, providing a period of rest or reflection. Backstory refers to the background information about characters or events that can be revealed through various means, including dialogue or exposition, rather than through a visual or narrative flashback.