The correct answer is D) interracial contact.
An increase in interracial contact has been followed by more positive attitudes between South African whites and blacks.
The horrendous years of Apartheid in South Africa, after the victory of the National Party, comprised by white people, they started a series of segregationists policies called the Apartheid that hurt the life of South Africa so much. The Apartheid lasted 50 years until President F.W. Clerk. started to change the legislation.
A key aspect to modify things has been the increase in interracial contact between black and white people, letting both sides knowing a little bit more of their culture and way of thinking, knowing that both are part of the same country.
The other options of the question were A) altruism, B) social responsibility, and C) superordinate goals.
