In this excerpt from "the way to rainy mountain" by n. scott momaday, what aspect of culture does the author explore?

i returned to rainy mountain in july. my grandmother had died in the spring, and i wanted to be at her grave. she had lived to be very old and at last infirm. her only living daughter was with her when she died, and i was told that in death her face was that of a child.

family
religion
language
tradition