Final answer:
The first action should be to remove the child from the water as quickly as possible. Look for signs of drowning and take measures to ensure the person gets help.
Step-by-step explanation:
When approaching a child who is struggling to keep their head above water, the first action should be to remove the child from the water as quickly as possible. This is because CPR is ineffective in the water and the goal is to bring the person to stable ground before starting CPR.
It is important to be aware of the signs of drowning, as a drowning person is unable to shout or call for help. Look for low head position with mouth open, uncontrolled movements of arms and legs below the water, and calm behavior that may resemble being safe.
By observing the surroundings and taking measures to ensure the person gets help, such as notifying an adult or authority figure, the bystander effect can be avoided.