The nurse is enjoying a day at the lake and witnesses a water skier hit the boat ramp. The water skier is in the water not responding to verbal stimuli. The nurse is the first health-care provider to respond to the accident. Which intervention should be implemented first?

B Organize onlookers to remove the client from the lake. D Stabilize the client's cervical spine. A Assess the client's level of consciousness. C Perform a head-to-toe assessment to determine injuries.