Answer:
c. reality shock
Step-by-step explanation:
Reality shock:-
It is defined as the condition in which an individual entering a new profession, finds himself/herself unfit or unprepared for that situations as well as circumstances. It is the feeling of the discovery that the real world is not as same as what an individual has read and learnt from the books.
Thus, from the question, Melissa realizing that what she has learnt and taught is not really helping her in the work. She is experiencing reality shock.