Answer: C.
Explanation: Being Black in America makes you a better person than those who are full of racial hatred.
The correct answer of the given question above would be option C. The excerpt from the story "Marriage is a Private Affair" that reveals cultural differences that contribute to the dilemma is "the boy’s mind is diseased, and only a good herbalist can bring him back . . . .”
Your incorrect answers were 3 and 4.
For number 3, the correct answer is b. This is because not language is not necessarily oral (i.e. there are written languages).
For number 4, the correct answer is b. Although comparative linguistics is a branch of historical linguistics, comparative linguistics is specifically concerned with comparing the linguistics of one person/place from the next.