Descriptive details help the reader <u>envision a concept or scenario</u>.
Explanation:
<u>Descriptive details mean the use of sensory elements in giving information about an object, place, or anything</u>. It involves the act of giving details in such a way that it <u>enables the readers to imagine/ envision the thing described.
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So, <u>descriptive details help the readers in envisioning or imagining the concept or scenario</u> that is being described or talked about. It allows the readers to form an image in their own minds about what is described, and then help them in understanding it.