Which detail from the way to rainy mountain supports the central idea that the kiowa oral tradition keeps the culture alive?

“yet it is within the reach of memory still…and …demands to be preserved for its own sake.”

“a single knoll rises out of the plain in oklahoma, north and west of the wichita range.”

“the old men were the best arrowmakers, for they could bring time and patience to their craft.”

“the sun follows a longer course in the day, and the sky is immense beyond all comparison.”