One disadvantage of using extinction as a means of behavior change is that

a. it is ineffective compared to other behavior change methods.
b. it frequently endangers the client.
c. the therapist may not be able to control the sources of reinforcement operating in the
client's life.
d. it can interfere with the therapist developing genuine insight into the client's striving for
self-actualization.
e. it may create an adversarial relationship between the client and therapist.

c. the therapist may not be able to control the sources of reinforcement operating in
the client's life.