Answer:
D
Explanation:
On the other hand can be used to compare and contrast.
Example: I like roller skating, on the other hand, I have gotten hurt.
The book "Life on the Color Line" by Gregory Howard Williams is about a boy who spent his whole young life thinking he was white, and then learned that he is part black. The title refers to the fact that he is learning how to integrate into both societies, both races.
He was interested in being completely surrounded by nature.