All of the Following Are Suggested as Effective Strategies for Reducing

All of the following are suggested as effective strategies for reducing prejudice, except

A) having people from various racial and ethnic groups work together who differ widely in social and economic status and in ability work on tasks together.
B) arranging appropriate educational experiences for children.
C) providing situations where members of diverse groups can work co-operatively toward shared goals.
D) extending the boundaries of narrowly defined social groups.