Read this excerpt from The Way to Rainy Mountain: The Kiowas are a summer people; they abide the cold and keep to themselves, but when the season turns and the land becomes warm and vital they cannot hold still; an old love of going returns upon them.

How does this detail develop the central idea?

A) It explains why the Kiowas were not welcomed by other tribes.

B) It reveals what the author experienced personally on his journey to Rainy Mountain.

C) It provides a description of the hardships of the journey.

D) It gives insight into why the Kiowas’ journey was connected to the land and seasons.