The Navajo ceremony that contains the Yeibichai songs is called Nightway ceremony.
The purpose of the ceremony is is to cure a sick person by aligning that person with the healing forces of nature.
Some of the features of the ceremony are: songs, chants, dances, sand paintings, and purification practices. It is a complex ceremony that lasts nine nights. Masked dancers become deities while the sick person becomes the hero in a mythic retelling.
This is an opinion question, you can put any of them and you will get it right. I would put George Washington, if they ask why then say that you disagree with his policies.
