The correct answer is C. He didn't have enough to write about in memoir so he added other voices.
Step-by-step explanation:
"The Way to Rainy Mountains" is a book by the author N. Scott Momaday, this book focuses on the life of the ancestors of the author who are members of the Kiowa Native Tribe. In this book, Momaday tells the story of the Kiowa as they have to leave their territory, experience war and finally resettle in a new place. Additionally, this book includes three different voices that narrate the events in the journey including an ancestral voice that tells the mites of the tribe; a historical commentary and the voice of Momaday himself.
In the article "The Way to Rainy Mountain Themes: Memory and History" by the journalist Sylvie McNamara she explains the themes and structure this book had, in the case of structure she explains Momaday show the history is not abstract but is composed of different values, stories, and ideas that need to be preserved. This philosophical view provides a possible explanation for the structure of the book as this perspective implies by using 3 voices instead of 1 Momaday probably aimed as a reflection about the Kiowa history and preserve it by providing different perspectives. Thus, the statement that accurately reflects why Momaday chose 3 voices to use as the structure for his book is "He believes that the 3 voices provide the most thorough reflection of the Kiowa history", because this is the statement that reflects the perspective the article does in reference to history and its preservation.