When dealing with a suspected spinal injury, the most critical action is to stabilize the victim's head and neck to prevent any further injury while awaiting emergency medical assistance. This response is essential because movement of the victim could exacerbate any existing injury to the spine, potentially leading to paralysis or other severe complications. By stabilizing the victim's head and neck, the lifeguard minimizes the risk of additional trauma, ensuring that the victim remains as safe as possible until professional help arrives.
It's also crucial to call for emergency medical assistance immediately so that trained healthcare providers can deliver appropriate care. This approach ensures that the victim gets the necessary medical evaluation and treatment as soon as possible.
The other options do not align with proper emergency response protocols. Ignoring the injury could put the victim at greater risk. Moving the victim to a safer location risks further injury to the spine. Administering first aid without calling for help may neglect the more critical priority of ensuring that professional medical personnel are en route to provide specialized care.