Frank attends an evening class at the local community college. His stomach begins to growl when he gets hungry. He wants to leave class early and get dinner, but realizes that leaving would be wrong because it would disrupt the class. Frank's realization is an example of his at work.

Superego.

Explanation:

The superego is the ethical component of the personality and provides the moral standards by which the ego operates (Brittanica, 2021). Frank is taking other people into account before he takes a decision, it would be wrong to disrupt the class. So his superego is at work.