A client admitted to the psychiatric unit diagnosed with major depression wants to sleep during the day, refuses to take a bath, and refuses to eat. Which nursing intervention should the nurse implement first?

A. Arrange a meeting with the family to discuss the client's situation: Meeting with the family may provide useful information and support, but it does not address the client's immediate needs for basic care, safety, and engagement in a therapeutic environment. B. Establish a structured routine for the client to follow: Establishing a structured daily routine provides clear expectations and promotes regular sleep, hygiene, and eating habits, which are crucial first steps in managing depressive symptoms and preventing further deterioration. C. Administer the client's antidepressant medication as prescribed: Administering antidepressants is necessary for treatment, but the therapeutic effects typically take several weeks; immediate behavioral interventions are needed to prevent worsening self-care deficits. D. Assess the client's ability to communicate with the other staff members: Assessing communication skills is important for planning therapeutic interventions, but it is not the most urgent priority compared to establishing structure that directly impacts the client’s daily functioning.