Davion and Angelo Are Identical Twins

Davion and Angelo are identical twins. At birth, their mother gave the babies up for adoption. Davion was adopted by a couple in California, while Angelo was adopted by a family in New York. Despite growing up in different homes, both boys have similar IQ scores. This finding illustrates the importance of _____ on intelligence.

A) genes
B) environment
C) geographical context
D) parenting