The word that refers to the medium of a story is:
B. Symbol
Explanation:
1. In the context of a story, a symbol is a literary device that represents an idea or quality beyond its literal meaning.
2. Symbols are often used by authors to convey deeper meanings or themes in a story without explicitly stating them.
3. For example, a red rose in a story might symbolize love or passion, while a dark storm cloud could symbolize impending trouble or conflict.
4. By using symbols, authors can add layers of complexity to their stories and allow readers to interpret the text in different ways.