Final answer:
Carl Rogers is the theorist who posited that personal growth is facilitated through interactions with others who exhibit genuineness, acceptance, and empathy, crucial for self-actualization. The correct option is 3) Rogers.
Step-by-step explanation:
The theorist who emphasized that an individual's personal growth is promoted by interactions with others who are genuine, accepting, and empathic is Carl Rogers. Rogers, a humanistic psychologist, believed in the growing potential of individuals when they are in a supportive environment exemplified by acceptance and empathy. He posited that for a person to achieve self-actualization, which is the realization and fulfillment of their talents and potentialities, such interactions are crucial. This is in line with his concept of the ideal self and the real self, where congruence between the two can lead to a greater sense of self-worth and a healthy, productive life.