All of the Common Methods of Psychotherapy Produce Approximately Similar

All of the common methods of psychotherapy produce approximately similar benefits, partly because all of them have this feature in common

A) The client avoids contact with others who have similar problems.
B) The client makes a commitment to making changes in his/her life.
C) The therapist tries to understand the client's unconscious motivations.
D) The therapist sets specific goals and provides reinforcements for achieving them.