Identify two reasons why the concept of race is not useful in understanding behavior?

a.  People within a given racial category differ greatly from one another; there is more difference among people within the same racial group than there is between people in different racial categories.
b.  There are no certain markers to distinguish people reliably according to race.  There has always been mixing of people from different groups, so the notion of a “pure” race is a fiction.
c.  Even though there may be some general similarity within groups or difference across groups, there is no reason to believe that those differences are associated with behaviors.

I doubled checked your answer with my study group, thank you for taking the time to help out.