Which of the following is an example of a "symbol" in literature?

A dove representing peace exemplifies a symbol in literature because it signifies a deeper meaning beyond its literal representation. In literature, symbols are objects, characters, figures, or colors that are used to represent abstract concepts or ideas. The dove is widely recognized as a symbol of peace and can convey themes of tranquility, hope, and reconciliation, adding layers of meaning to a narrative.

In contrast, options like a plot twist, a character's journey, or a detailed description of the setting do not function as symbols. A plot twist is an unexpected development in the storyline, a character's journey typically focuses on their growth or transformation, and a setting description paints the environmental backdrop of the story. While these elements are crucial to storytelling, they do not encapsulate the idea of representing something deeper or more abstract through imagery or association, which is the defining characteristic of a symbol.