Supervisors have a legal and ethical responsibility to ensure quality of care for clients, the professional ____________, and maintenance of programs, policies, and procedures.

In the context of supervisory responsibilities within the field, ensuring the quality of care for clients is closely tied to the ongoing professional development of staff. Professional development involves ongoing training and education that help staff enhance their skills and knowledge, which in turn contributes to the overall quality of care provided to clients. This focus ensures that practitioners are up-to-date with best practices and adhere to ethical standards in their interactions with clients.

While accountability, evaluation, and performance are all important concepts in supervision and contribute to quality assurance, the emphasis on development highlights the proactive approach needed in supervisory roles. By prioritizing professional development, supervisors not only foster a skilled workforce but also create an environment that emphasizes continuous improvement in service delivery. Thus, the correct answer reflects the broader responsibility of supervisors to cultivate growth and advancement in the profession, ensuring that every client receives the highest standard of care.