Dr. Mills research represents social psychology.
B) social psychology.
Explanation:
Social psychology is the study conducted on people’s thoughts, behaviors and feelings. The thoughts, behaviors and feelings are some of the psychological variables that are measured in the humans during research.
The psychologist reveals that behavior of the human is based on mental state and situation of the person. Social psychology helps to bridge the gap between psychology and sociology.
Dr. Mills’s research on why individuals conform to the behaviors and opinions of others deals with the Social psychology.