A nurse is caring for a client who has a mental illness. Which of the following actions by the nurse demonstrates the ethical concept of autonomy?

The correct answer is B because supporting the client's wish to refuse prescribed medications demonstrates respect for the client's autonomy, allowing them to make their own decisions about their treatment. This aligns with the ethical principle of autonomy, which emphasizes an individual's right to make choices regarding their own healthcare. Choices A, C, and D focus on providing information and guidance rather than respecting the client's autonomy. Explaining unit rules and policies (A) is important but does not directly relate to autonomy. Making sure the client understands expectations (C) is about education and communication, not autonomy. Encouraging client feedback (D) is essential for quality improvement but does not directly address autonomy.