Which of the following stretchers would be least suitable for transporting a patient on a rugged terrain?

The wheeled stretcher is least suitable for transporting a patient over rugged terrain due to its design and functionality. Wheeled stretchers are generally designed for smooth surfaces, such as hospital floors or paved paths, where wheels can easily roll without obstruction. In contrast, rugged terrain typically features uneven ground, rocks, and other obstacles that can hinder or prevent effective movement of wheeled stretchers.

Basket stretchers, on the other hand, are specifically designed for rough and difficult terrains. They are sturdy and able to be carried by multiple rescuers, making them ideal for navigating challenging environments. Portable stretchers, while more lightweight and designed for easy transport, are also adaptable to rough terrains when carried. Scoop stretchers allow medics to quickly load and unload a patient, and while they may also pose challenges in rough environments, they can still be used effectively when necessary. The wheeled stretcher's dependency on a smooth surface makes it the least suitable choice compared to the other options available for rugged conditions.