Which characteristic is NOT typical of a caption?

Captions serve a specific purpose in relation to images, providing context and aiding understanding. They typically include a brief explanation that enhances the viewer's comprehension of the visual content. Additionally, captions often describe the image, highlighting key elements or details that may not be immediately obvious. Titles related to the content are also commonly found alongside images to give a succinct overview or thematic context.

An introduction to the author, however, is not a characteristic associated with captions. While this kind of information may be relevant elsewhere, such as in a biography or an article, it does not serve the purpose of a caption, which is to relate directly to the image itself rather than to the creator of the image. Therefore, the choice that states an introduction to the author is not typical of a caption is accurate, as captions focus on the visual rather than the biography of the individual responsible for the image.