Note that based on the discussion in your text, the option from the following strategies would effectively reduce prejudice between "having groups meet under equal terms and cooperate on a task." (Option C). The above is related to team dynamics.
According to research on intergroup relations, one effective strategy for reducing prejudice between groups is having them meet under equal terms and cooperate on a task. This is known as the contact hypothesis, which suggests that prejudice can be reduced when members of different groups interact with each other in a positive and cooperative manner.
When groups meet under equal terms, they are more likely to form positive attitudes towards each other, as they are not competing or in a hierarchical relationship. Cooperation on a task can also promote a sense of commonality and interdependence, which can further reduce prejudice.
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