Which of the Following Is NOT Identified in the Textbook

Which of the following is NOT identified in the textbook as a reason for the disparity in the ways that the effectiveness of therapy is evaluated?

A) Practitioners of different approaches vary in their belief in the importance of evaluation.
B) The client ultimately has control over whether therapy is evaluated and some clients refuse to participate in evaluation.
C) The definition of evaluation varies with therapists.
D) The extent to which practice is evaluated differs among therapists.
E) Methods used to evaluate effectiveness vary from the broad and subjective to the specific and objective.