Although the IQs of African American Children Are 10 to 12

Multiple Choice

Although the IQs of African American children are 10 to 12 points lower than those of Caucasian children, the difference is within the reaction range of IQs. This indicates that the difference could be caused by all of the following EXCEPT

A) low birth weight.
B) inadequate nutrition.
C) high blood levels of lead.
D) parents who do not read to their children.
E) genetic programming.