Which statement is a central idea of the way to rainy mountain? a) the value of language is in its ability to make arguments. b) cultural language changes over time. c) the preservation of an oral tradition also preserves a culture’s identity. d) kiowa power will increase when the government gives them more land.

The central idea is : 
C) The preservation of an oral tradition also preserves a culture’s identity.
The story revolves around the life of family in Kiowa Culture and the story conveys that due to the lack of recorded events to rely on to display the characteristic of a certain culture, each members of the culture should try their best to preserve it.