Steve, a 68-year-old man, quit his medical practice two years ago when he realized his work schedule was taking a toll on his health. he now occasionally lectures in colleges and spends most of his time volunteering at the local church. this example illustrates the concept of

ego differentiation versus work role preoccupation

Explanation:

Robert Peck's theory of the ego differentiation versus role occupation explains how older people redefine the worth of their life by engaging themselves in something other than their work role. The old people recognizing that their health is in the declining phase and they tend to feel good by contributing their part for social welfare programs. As per the question, Steve who is old and engage himself in volunteering work reflects the example of ego differentiation versus work role preoccupation.

answer; i believe that the correct answer is (tabula rasa);

sounds good to me mate!