Answer: A) It explains the origin of people, animals, and plants.
Explanation: a myth is a traditional story, especially one concerning the early history of a people or explaining a natural or social phenomenon, and typically involving supernatural beings or events. In the given excerpt from "The Worl on Turtle's Back" we can see the description of how two brothers created animals, fruits, plants, medicines and man from clay, this story is clearly a myth because it explains the origin of people, animals, and plants.