Answer:
C. showed that complex social behavior could be examined scientifically.
Explanation:
Social Psychology: The term "social psychology" is determined as one of the scientific studies related to different human behaviors in a specific society. It tends to study human beings behavior together in a group and therefore describes the process through which their behavior is being influenced in the presence of others and along with it signifies the "socio-psychological" motives and causes of them in a designated group.
Social psychologists tend to describe that individuals possess an entirely complex social behavior.