Muzafer Sherif's Research Was Crucial for the Development of Social

Muzafer Sherif's research was crucial for the development of social psychology because it

A) introduced the idea of cognitive dissonance.
B) marked the beginning of the pluralistic approach that continues to characterize the field.
C) firmly established the importance of an interactionist perspective.
D) demonstrated the feasibility of studying complex social issues in a rigorous manner.