Ernie Has a Conviction for Marijuana Use in His Past

Multiple Choice

Ernie has a conviction for marijuana use in his past. For the first three years of his employment, he had to submit to monthly drug testing. After three years of being clean, his employer changed the requirement to a random test twice a year. This change is an example of

A) negative reinforcement.
B) positive reinforcement.
C) extinction.
D) punishment.
E) arbitration.