Which of the following is one of the three primary tasks of first aid?

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Preventing or treating shock is a central aim in first aid because shock can develop quickly after injury or illness and then worsen blood flow to vital organs. The priority is to keep the person’s circulation stable while help is on the way. That means having them lie flat if possible, and, if there’s no potential spine injury, raise the legs slightly to improve blood return. Keep them warm with a blanket, monitor breathing and consciousness, and avoid giving food or drink. If there’s severe bleeding, control it with direct pressure. These steps help maintain perfusion and buy time for professional care.

Other options touch on parts of first aid, but they aren’t the primary task covered here. Checking responsiveness is an important assessment step, and keeping warm is part of managing shock, but neither alone represents the main objective. Transporting someone immediately without assessment can miss hazards or stabilize issues that need attention first.