What is the best method for transporting an injured person over rough terrain?

Using a wheeled litter or a makeshift stretcher is the best method for transporting an injured person over rough terrain because it provides a stable and secure means of transport while minimizing discomfort and potential further injury to the patient. This method enables the rescuers to distribute the weight of the injured person more evenly, reducing the strain on individual rescuers and allowing for smoother movement over uneven surfaces.

A wheeled litter is particularly advantageous in areas where surfaces are less stable, as it allows for easier navigation and reduces the physical effort required to carry the injured individual. A makeshift stretcher, while lacking wheels, still offers support and reduces the risk of aggravating any injuries compared to methods that involve dragging or carrying the person directly.

In contrast, carrying someone on your back may not be feasible for heavy individuals or those with serious injuries, and can increase the risk of injury for both the carrier and the patient. Dragging a person by the arms can cause further harm and is uncomfortable for the injured individual. Although encouraging the injured person to walk if able might be appropriate for minor injuries, it could lead to worsening a more severe condition or injury, making it an unsuitable choice in this context.