A client in the emergency department following a motor vehicle crash is pacing, clenching their fists, and shouting. "I can't think! I don't know what to do!" The nurse observes that the client is unable to follow simple instructions, appears disoriented, and is hyperventilating. Which of the following nursing interventions is most appropriate for the client's current level of anxiety?

Rationale: A. Open-ended questions are more effective when anxiety is mild to moderate, not when the client is in a panic state and unable to process information. B. Exploring anxiety triggers requires a higher level of cognitive function, which is impaired in severe or panic-level anxiety. C. The client is displaying signs of panic-level anxiety (disorientation, inability to follow instructions, hyperventilation). In this state, the nurse should use short, clear, and direct instructions delivered in a calm, firm tone to promote safety and grounding. D. Educational materials are not helpful during panic; the client is not in a state to absorb new information.