Final answer:
The owner must have an active license to be compensated for appraising another service station.
Step-by-step explanation:
The most correct statement is b. He or she must have an active license to be compensated.
According to the information given, the owner of the service station holds an inactive sales associate's license.
In order to be compensated for appraising another service station, the owner must have an active license, not an inactive one.