Final answer:
Describing the setting of a flashback helps provide context and differentiate the present from the past.
Step-by-step explanation:
Describing the setting of a flashback can be useful because it signals to the reader that the scene takes place in another time. This helps provide context and differentiate the present moment from the flashback. For example, if a character is remembering a childhood event, describing the setting of that flashback can transport the reader back to that time and help understand the character's motivations in the present.
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