As Far as Sociologists Are Concerned, the Concept of "Race

As far as sociologists are concerned, the concept of "race" is important because

A) understanding a person's race allows us to predict his or her IQ.
B) understanding a person's race allows us to predict his or her behavior in general.
C) people in different racial groups tend to have different personalities.
D) people tend to be treated differently depending upon their racial characteristics.
E) people in different races are more or less prone to mental illness.