The correct answer for this question would be the last option. The central idea that is presented in the introduction to The Way to Rainy Mountain is that, the Kiowa people are connected to the land and their journey. The Way to Rainy Mountain is written by N. Scott Momaday wherein Momaday traces the ancestral roots back to the beginning of the Kiowa tribe.
The answer would be D. "Yet, he figured out how to make a battery using soda, metal, and tape."
This shows that Kelvin was creative in solving the problem of having no batteries because he found a way to create his own with rather strange items. Most people wouldn't think to create anything with those three items, which shows that this creation took extra creativity on Kelvin's part.
In spite of betraying Guy, Mildred is a character who is sympathetic.
Another suggestion for a thesis:
Though she betrayed Guy, Mildred is quite sympathetic.
