A myth can be defined as a legendary story that concerns a hero or event that is related to deities or demigods; it explains the origins of a practice, rite, or something related to nature. Options A and B fit in this category since Cupid and Psyche narrates the story of how Cupid makes Psyche fall in love with a monster because Cupid's mother Venus was jealous of Psyche. Also, Prometheus and the First People tells the story of how Prometheus is tortured by Zeus because the first one gave humans the fire.
The author's purpose is to give an example of a disadvantage or unfairness between being colored or being white and make the reader more sympathetic to the circumstance.
