Final answer:
Imagery is the literary device that uses vivid descriptions to provide readers with mental images.
Step-by-step explanation:
The use of vivid descriptions in literature is an example of the literary device known as imagery. Imagery is the use of descriptive language to create mental images and engage the reader's senses. By using vivid descriptions, such as colorful adjectives and sensory details, authors can paint a picture in the reader's mind, allowing them to visually experience the events unfolding in the story.
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