The correct answer is C.
In his article, Baldwin tries to convey the idea that, people develop languages so that they an describe and control their circumstances because, otherwise, they would be submerged by a reality that they cannot articulate.
He seeks to explain that, the Englished used by white people is not useful for blacks because it does not allow them to express the experiences they had to undergo. This led them to create their own language, which Baldwin calls "black English."
