One of the advantage of using dialogue in a narrative essay is to:
Dialogue involves when two or more characters are having a conversation about something in a drama or work of fiction.
A narrative essay is one in which the writer tells a story that contains a central idea, a motif, a plot and uses diction to address the people.
With this in mind, it is important for the narrator to make use of dialogue in order to show who the characters are and how they are able to play their roles in the narration.
Therefore, the correct answer is option C
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