A nurse is caring for a client who has just learned that their partner has died by suicide. Which of the following actions should the nurse take first?

The correct answer is D: Determine the client's understanding of the suicide events. This is the first action the nurse should take to assess the client's comprehension and emotional response to the situation. By understanding the client's understanding, the nurse can provide appropriate support and interventions tailored to the client's needs. Referring the client to a support group (A) or informing about feelings of guilt (C) may be premature without assessing the client's understanding first. Offering to contact family or support system (B) is important but not the first priority.