Marilyn thinks a strict class attendance policy is an indication of her professor's overly-controlling personality rather than a necessity dictated by the limited number of class sessions (the course meets only once a week). her judgment best illustrates:

Her judgement best illustrates the fundamental attribution error.
the fundamental attribution error refers to the bias that created because we interpret other people's behavior by using our own behavior as a standard.
So rather than objectively analyze other person's behavior, we turned to create a reflection of our inner insecurities.