The nurse notes that a client with a history of self-mutilation has increased body tension and is pacing in the hallway. Which nursing intervention is most important at this time?

A. The client's increased body tension and pacing indicate escalating distress and potential risk for self-harm. Alerting staff to closely monitor the client and intervene as needed is crucial to ensure the client's safety. B. Providing time alone in the client's room may be appropriate in some situations but may not address the immediate risk of self-mutilation if the client is experiencing escalating distress. C. Giving firm, consistent expectations about self-mutilating behaviors is important for establishing boundaries, but it may not be sufficient to address the immediate risk of self-harm without additional monitoring and intervention. D. Completing a thorough room search is important for safety but may not address the immediate risk of self-harm if the client is already exhibiting signs of distress and pacing in the hallway.