Adoption Studies Suggest That IQ Scores of Adopted Children

Multiple Choice

Adoption studies suggest that IQ scores of adopted children

A) correlate more strongly with the IQs of their adoptive parents than the IQs of their biological mother.
B) are lower, on average, than those of children reared with their biological parents.
C) correlate more strongly with the IQ of their biological mother than the IQ of their adoptive parents.
D) are highly correlated with their non-biological siblings.