The correct answer is the first option, "it explains the origin of people, animals, and plants.
The second, third and fourth options can't be considered as correct because there isn't a part of the text that can tell us about any rivalry between the two brothers, it also doesn't explicitly say anything about animals and plants representing "good or evil" and the last option definitely doesn't answer the main question.
instead, the first option accordingly represents this symbolic narrative (The World On Turtle's Back). This is a creation myth because it refers to how the world began and how animals, plants, fruits, medicine, and people were created. We can note it when it says:
- "These two brothers had creative powers... they took clay and modeled it into animals"
- "They also created fruits, plants, and medicines"
- "The right-handed twin made man"