Aprofessor is not going to wear a nightgown to her classroom because this violates the social norms of the classroom setting. according to erving goffman, this professor is engaging in impression management mystification misrepresentation social learning

A). Impression management.

Explanation:

Erving Goffman, the famous sociologist proposed his theory of social interaction through a symbolic point of view. He compared the social interaction and day-to-day behavior of the people to the metaphor of theater and views society as a stage of theatrical performance and people as actors who are performing on this stage and their daily behaviors and responses exemplify the dialogues or content delivered.

As per the description given, the professor is being engaged into 'impression management' as humans(as actors focus on costumes) are concerned about presenting them as self(performers) in order to leave impression on the minds of others in order to control the others(in a social interaction) in the society. Thus, option A is the correct answer.