According to the Field of Behavioral Genetics, What Factor(s) Contribute(s)

Multiple Choice

According to the field of behavioral genetics, what factor(s) contribute(s) to drug addiction? Behavioral genetics implies that drug addiction results

A) only from weak will-power to abstain from drug use.
B) only from a genetic disposition to enjoy and use drugs.
C) only from an environment that puts an individual at risk for drug use.
D) both a genetic disposition for drug use plus an at-risk environment for drug use.