I think your answer is A.
Can you explain what you mean by comment back ? Or do you want an explanation of what that means ?
Answer:
In the case of African Americans.
Explanation:
The melting pot has failed because even today the minority is second class and is not living the embodiment of the American Dream. The ideal America that JFK was talking about was a mix of ethnicities
Answer:
C
Explanation:
Unlike D, If you replace "hoary" with "frosty" it doesn't make sense.