An emergency situation at robbers cave brought the groups together because of a. in-group solidarity b. intergroup conflict c. all of these d. superordinate goals

The best choice is D. superordinate goals. The situation in the Robber's Cave experiment was that the two groups of boys were very aggressive at each other. Only superordinate goals, where separate groups are rewarded for accomplishing goals together with other groups, could have united the two groups.

Ihave no idea. about. that