Final answer:
Sequential socialization is the process described in the question. It involves attending orientation, classroom training, on-the-job training, and being assigned a mentor.
Step-by-step explanation:
The subject of this question is socialization in the context of workplace orientation and training.
The process described in the question is known as sequential socialization. Sequential socialization refers to the step-by-step process of transitioning an individual from being a new employee to a fully integrated member of an organization. It involves attending orientation, classroom training, on-the-job training, and being assigned a mentor.