The narrative that the author includes in the passage is setting. It helps to buttress the authors argument or purpose in that "highlights the sense of oppression".
What is a narrative?
A narrative technique is a style or literary device used by authors when they are positioning the plot of the story for better comprehension by the readers.
Thus it is right to state that the narrative that the author includes in the passage is setting. It helps to buttress the authors argument or purpose in that "highlights the sense of oppression". (See attached image)
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