what did the Stanford prison experiment show A. Prisoners and guards enjoy their roles B. Groups can work together effective C. Role-playing is not a good way to learn D. Power makes some people cruel

The answer is D power makes some people cruel

According to Zimbardo and his colleagues, the Stanford Prison Experiment demonstrates the powerful role that the situation can play in human behavior. Because the guards were placed in a position of power, they began to behave in ways they would not usually act in their everyday lives or other situations.