Dr.Evoy does research that has examined the behaviour of individuals when they are in groups,as well as when they are alone.She has found that people tend to conform to the opinion of a dominant person within a group,and that this opinion tends to be much different than the opinion that would form if the individual were alone.Based on this information,which sort of psychologist do you think Dr.Evoy is

A)  social psychologist 
B)  developmental psychologist 
C)  cognitive psychologist 
D)  psychometrist