Carl Is Involved in a Therapy Group in Which He

Carl is involved in a therapy group in which he is frequently asked to role-play various people and even inanimate objects in order to gain more access to feelings from which he has been cut-off. The therapist facilitating the group is rather imaginative when
Suggesting activities for the group and has been known to be challenging every now and then. Carl's therapy group is most likely based on the principles of:

A) interpersonal therapy.
B) person-centered therapy.
C) cognitive therapy.
D) Gestalt therapy.