Which of the following is included in the subjects of professional ethics?

The inclusion of the TN Code Annotated - Title 63, Chapter 22 as a subject of professional ethics is significant because this legal framework outlines the laws and regulations governing the practice of counseling in Tennessee. It gives counselors the necessary guidance on ethical and legal conduct specific to the state, including licensure requirements, client confidentiality, and professional responsibilities.

This code serves an essential role in establishing a standard for ethical practice within the profession, reinforcing the legal obligations that counselors must adhere to in their practice. Having a solid understanding of this code helps counselors navigate ethical dilemmas while ensuring compliance with state laws.

In contrast, while the other options provide important ethical guidelines and frameworks relevant to counselors, such as those from the NCDA and ACA, they are not specific legal documents of Tennessee law. Instead, they serve as resources and guidelines that inform counseling practice on a broader scale rather than establishing mandatory legal standards specific to the state. Therefore, the TN Code Annotated - Title 63, Chapter 22 is the most appropriate answer, as it directly pertains to the legal and ethical responsibilities of counselors practicing in Tennessee.