What is the function of a metaphor in literature?

A metaphor functions by drawing a comparison between two unlike things, which enhances the reader's understanding and interpretation of the text. This figurative language allows writers to convey complex ideas and emotions in a more relatable way, enriching the meaning of the work. By equating one thing to another, a metaphor can evoke feelings, create connections, and provoke thought in ways that literal language may not achieve. The comparison often uncovers deeper insights into the themes, characters, or situations presented in the literature, making it a powerful tool for writers.

The other options do not capture the essence of a metaphor. For example, providing a literal comparison does not reflect the figurative nature of metaphors. Creating visual imagery is more characteristic of similes or descriptive language. Summarizing the main idea pertains to overarching themes or plot points rather than the nuanced comparisons that metaphors explore. Thus, the chosen answer accurately represents the key function of a metaphor in literature.