Which Statement Supports the Relationship Between Behavior and Gene Expression

Multiple Choice

Which statement supports the relationship between behavior and gene expression?

A) A person can change his or her genome only with medical treatment.
B) By repeating an activity many times, a person can affect how certain genes are expressed in the brain.
C) Behavior affects gene expression in infancy, and then the environment takes over.
D) Elderly people are more susceptible to behavioral shifts because their gene expression is unstable.