A Major Problem with Genetic Explanations of Racial Differences in IQ

Multiple Choice

A major problem with genetic explanations of racial differences in IQ is that:

A) while intelligence differs between groups, it does not differ within groups.
B) heritability estimates used in supporting genetic explanations of group differences are based mainly on white samples.
C) the studies supporting a genetic explanation typically use black and white children from comparable socioeconomic groups.
D) genetic explanations are based on linkage studies.