Assuming that you're talking about the myth of Greek Gods, the purpose of the myth is for an Explanation of natural Phenomena. For example if sailors in that era were trapped in a massive storm in the middle of the sea, they will say something like : "we've angered the Poseidon"
Answer:
umm I think [C: The government of the United States is made up of three main
branches.]
A. Families who are in need of this service