Final answer:
Edgar Schein proposed a three-phase model of organizational socialization: anticipation, encounter, and change and acquisition.
Step-by-step explanation:
The correct answer is A. Edgar Schein.
Edgar Schein proposed a three-phase model of organizational socialization. According to Schein, the three phases are: anticipation, encounter, and change and acquisition. In the anticipation phase, individuals have certain expectations and beliefs about the organization based on pre-entry information. In the encounter phase, individuals experience the reality of the organization and may adapt or adjust their expectations. Finally, in the change and acquisition phase, individuals internalize the values, norms, and behaviors of the organization.