Final answer:
Option a) is accurate as it reflects the cornerstone of behavior therapy - applying what is learned in everyday life and actively confronting the fear. Options b) and c) set unrealistic expectations and d) is incomplete. The measure of success is Phil's ability to manage and confront his fear in everyday situations.
Step-by-step explanation:
The subject of the question revolves around a psychological treatment scenario of overcoming a fear of heights through behavior therapy. To assess the completion of the treatment for Phil, a careful evaluation of his progress and the application of his learning to real-life scenarios is essential. Treatment completion criteria involve the translation of therapeutic gains into everyday behaviors and actions.
Option a) provides a practical end goal for treatment: Phil must transfer what he learns in therapy to his everyday life and take actual steps to confront his fear. This might mean gradually exposing himself to heights in a controlled and supportive manner, also known as exposure therapy, which is a common treatment for phobias.
Option b), suggesting Phil take up sky diving, is unrealistic as a criterion for treatment completion as it represents an extreme which may not be necessary for everyone. Option c) is also not realistic as the absence of any fear is not a typical or necessary outcome of behavior therapy. Lastly, option d), while acknowledgement of fear is an important step in therapy, it is not by itself sufficient to consider treatment complete.