Ray Has Been Abusing Alcohol for Many Years

Ray has been abusing alcohol for many years. His physical condition has become life-threatening and he finally seeks treatment at University Hospital. He is asked if he would take part in an experimental program involving a relatively new drug for treating alcohol, naltrexone. How is this drug likely to affect his alcohol problem?

A) The drug alters the brain's electrical activity by inducing delta waves.
B) The drug reduces relapse rates in people being treated for drinking problems.
C) The drug increases dopamine and norepinephrine levels in the brain's reward centers.
D) The drug induces an altered state of consciousness that makes it less likely that people will drink.