Xavier took his responsibilities as a supervisor very seriously. Ethically, he needed to work to ensure that all of his supervisees were trained on all the items in the Behavior Analyst Certification Board (BACB) Task List. But, he knew that just providing training was not good enough. He needed to evaluate the effectiveness of his supervision as a way to improve his supervisory effectiveness. So, he designed a criteria by which he could assess the skill gains in his supervisees. He also developed a questionnaire that he had his supervisees fill out anonymously each month. What ethical code is guided Xavier's approach? Question 4 options: a) Supervisory competence and accountability b) Providing supervision and training c) Evaluating effects of supervision and training