What action should a lifeguard take if they suspect a spinal injury?

When a lifeguard suspects a spinal injury, it is crucial to prioritize the victim's safety and well-being while minimizing the risk of further injury. Performing a rescue while maintaining the victim's head and neck in a stable position is the correct action. This approach helps to secure the spine and prevents any movements that could exacerbate the injury. Lifeguards are trained in techniques such as holding the head in a neutral position or using specific rescue techniques that allow them to safely maneuver the victim without excessive movement of the spinal column.

In contrast, immediately lifting the victim from the water could risk causing additional harm if there is an undiagnosed spinal injury. Administering CPR is essential in drowning situations but should only be considered if the victim is unresponsive and not breathing, and only after ensuring the spine is stabilized if a spinal injury is suspected. Requesting a backup lifeguard can be beneficial for extra assistance but is not a direct action to take for the immediate safety and stabilization of the suspect spinal injury victim. Thus, option B is the most appropriate response in this scenario.