D - It intensities the conflict.
Any time there is a complication in a story, the pupose is to intensify the conflict. Exposition delivers necessary information (example: the setting), and a conflict does not resolve (end) a story nor introduce a theme.
If not given justice equally to everyone, which goes from racial equality to gender equality, than there will be large amount of riots/ protests that may occur. For example, the one that took place during George Floyd’s death.
Hope that helps
A; because the narrator is usually a character in a story, who interacts with other characters.