I think the answer they are looking for there is "Military".
Answer:
D is the best topic answer because the paragraph details the 3 things they like about the new home.
It might be stated that part 4 is included in order to provide a data-support information, that is to say, that this is not just an opinion but there have been researches on the matter, such as census and polls which might add validity to the statements. This is a way of showing that there is enough information to support the topic discussed.
I can't decide between B and C. I think B is a more likely answer, although I'm not sure.
The Way to Rainy Mountain is a book by N. Scott Momaday about the travels of the Kiowa tribe from Montana to Fort Sill. He tells the story through three different points of view that help understand the history of his people and how he rediscovered it.
So the answer is <em> To provide material evidence of the traditions of the Kiowa through a written account of their history</em>.
