The correct answer to the question: The motor on a PWC is running. Which part of the PWC can cause severe internal injuries, would be: the steering nozzle behind the PWC.
Explanation:
According to several websites on Personal Water Crafts (PWC), the steering nozzle is a particularly dangerous place that can cause severe internal injuries when it is turned on, and someone lies behind the jet that comes out of it. Because of the power with which the water is pushed out by the nozzle, it can hit anyone lying right behind the watercraft and cause severe internal trauma. This is why, it is required that anyone interacting with these machines should wear protective clothing, like wetsuits, and that when a nozzle is activated, people stand clear and away from the trajectory the water from this part of the machine will take.
