What is the purpose of a "caption" in a text?

A caption serves the purpose of providing a brief explanation or description that accompanies an image or illustration within a text. It helps readers understand what the visual element represents and how it relates to the surrounding content. Captions are often concise and directly refer to specific details within the image, enhancing the overall understanding of the text by giving context to the visuals. This makes the content more engaging and informative, allowing for a better connection between the imagery and the written material. In contrast, the other choices refer to different components of a text: a detailed analysis, a summary, and a title, none of which fulfill the specific role of explaining or describing visual content.