The answer is: c. There has been a growing reluctance by Whites for integration, interracial dating, and having members of minority groups attain political office
In the 1950s, American people were in a transitional phase in term of their perception toward African American. Ever since the 17th century, Black people were never seen as equal in American society.
So after the abolishment, many of American people still can't fully accept the fact that Black people are equal to them and the fact that the power in society have to be shifted. This lead to the growing reluctance in integration, interracial dating, and having members of minority groups attain political office