Registration in ms. mcnick's classes reaches maximum enrollment quickly. students register immediately online just to insure their seat in her class. one student summed it up: "everyone's heard she is the best teacher on campus." ms. mcnick's classes benefit from: ) positive public relations.(2) word-of-mouth promotion.(3) viral publicity.(4) free advertising.

(2) word-of-mouth promotion.

Explanation:

Based on the information provided within the question it seems that Ms. McNick's classes benefit from word-of-mouth promotion. This is a type of distribution of information where one person tells another about their experience, and then that person tells someone and so on. This is free promotion garnered based on the experience that one individual may have and can either be positive or negative.

answer; operating revenues;