Answer:
D. participated in a winner-take-all competition
Explanation:
Robbers Cave Study can be characterized as a study of realistic group conflict. This study aimed to analyze and explain how hostility grows between groups through conflicts created in competitions. Furthermore, this study explained how feelings of prejudice and discrimination arise among groups that were competing for something. In the Robbers Cave study, specifically, this conflict between the groups developed into a competition where the winner took all the prizes.
If I understood your question correctly, then the answer is "it depends". Sometimes, individuals have a large impact on starting a war (think World War I where one individual caused the war to start), other times groups of people have also important roles in starting a war (think World War II).
The Law of Original Horizontality was first proposed by Danish geological pioneer Nicholas Steno in the 17th century. The law states that layers of sediment were originally deposited horizontally under the action of gravity. Any rock layers that are now folded and tilted have since been altered by later outside forces
