An Extensive Study Was Conducted on Identical Twins Who Were

Multiple Choice

An extensive study was conducted on identical twins who were separated at birth.Among other things, the study showed that the individual from each pair who received better nutrition during childhood tended to score higher on standardized intelligence tests.This can best be described as an example of how

A) mutation alters phenotype.
B) environment alters phenotype.
C) environment alters genotype.
D) mutation alters genotype.