Final answer:
A flashback is a literary technique in which a story shifts to an earlier time or event. In a play, it can be depicted through lighting, sound effects, or costume changes.
Step-by-step explanation:
In literature, a flashback is a technique used to interrupt the chronological flow of a story and shift to an earlier time or event. It provides background information or insights into a character's past experiences or significant events. In a play, a flashback can be indicated through changes in lighting, sound effects, or costume to transport the audience to a different time or place.
Learn more about The literary term 'flashback' and its usage in a play