Answer:
The informal language creates a conversational tone.
Explanation:
N. Scott Momaday's "The Way to Rainy Mountain" tells the history and story behind the Kiowa people's way from their primary Montana habitat to the Rainy Mountains in Oklahoma. This book is a combination of a travelogue, memoir, poem and also a historical piece all in one.
The way the author provides or approaches the storytelling is more like an informal tone. This gives the sense of a conversation being used in the story, a story told between people as in a conversation and not like the usual way of storytelling. This informal approach also makes it more easy to understand, as if it's a conversation between individuals.
