Answer:
The correct answer is C.
Step-by-step explanation:
In the 1970 study, Discussion Effects on Racial Attitudes, researchers David Myers and George Bishop tested the effects of group discussion within groups of high school students with different prejudiced and unprejudiced attitudes. Myers and Bishop anticipated that the attitudes of each group would be reinforced by open discussion, leading a increased polarization between groups. As predicted by them, when discussing racial issues with others having similar attitudes, the individuals who were relative unprejudiced became even less prejudiced and the individuals who were relatively prejudiced became even more prejudiced.