A nurse on a mental health unit is caring for a client who has bipolar disorder. Which of the following actions by the nurse incorporates the ethical principle of fidelity?

A. Documents the client's refusal of their prescribed medications: Accurate documentation reflects professional responsibility and legal accountability, but it is related to veracity and accountability rather than fidelity, which focuses on keeping commitments. B. Provides a quiet space for the client if they become agitated: Creating a safe environment demonstrates beneficence and respect for the client’s well-being, but it does not specifically reflect fidelity, which emphasizes faithfulness and honoring promises. C. Informs the client about the adverse effects of their medication: Educating the client supports informed consent and autonomy, aligning with the principle of veracity, but it does not directly involve keeping a commitment or promise. D. Returns at the promised time to sit and talk with the client: Returning at the promised time demonstrates fidelity by maintaining trust and keeping commitments made to the client. This action strengthens the therapeutic relationship and models reliability and consistency in care.