Answer:
his supervisor
Explanation:
A supervisor is a person who supervises an activity or a work. His main job is to monitor the work and see that the work is down smoothly and is completed on time. He also manages his workers to do the job effectively. He acts like a boss to the other employees who are subordinate to the supervisor.
In the context, Grady who works at a fast food restaurant, once notice that one of his co-worker is giving some free food to his friend. So Grady who did not what to do and act in such a time, decided to follow the example of his supervisor and dealt with the situation as the supervisor would deal.
