What is the use of an object, person, or event to represent a deeper meaning called?

The term that describes the use of an object, person, or event to represent a deeper meaning is known as symbolism. This literary device allows writers to convey complex ideas and emotions through tangible representations, enabling readers to find layers of meaning beneath the surface of the text. For example, a green light in literature may symbolize hope or the unattainable, adding depth to the narrative.

Other options like mood refer to the emotional atmosphere of a story rather than using objects or events to convey deeper meanings. The central idea is the main point or message of a text but does not specifically involve representation through symbols. Imagery involves descriptive language that evokes sensory experiences instead of representing deeper meanings through objects or events. Hence, symbolism is the most fitting term for this concept.