The Robber's Cave experiment showed that _____________.

A) playing athletic games, such as football and baseball, reduces us-them hostility
B) watching movies together, and experiencing similar quiet interactions, reduces us-them hostility
C) engaging in mutually exciting activities, such as tug-of-war, reduces us-them hostility
D) interdependence in solving crises together reduces us-them hostility

The Robber's Cave experiment demonstrated that interdependence in solving crises together can reduce us-them hostility. The experiment involved two groups of boys who were initially separated and placed in different areas of a summer camp. The groups were then brought together and put in situations where they had to work together to overcome challenges, such as a water shortage. As they cooperated and relied on each other to solve these problems, their hostility towards each other was significantly reduced.