What is the recommended action if the casualty shows signs of shock?

The recommended action when a casualty shows signs of shock is to administer oxygen and promote recovery. Shock is a critical condition that occurs when the body's organs do not receive enough blood flow, leading to insufficient oxygen reaching tissues. Administering oxygen helps increase the amount of oxygen available to the body's tissues, which is vital for recovery and stabilizing the individual’s condition.

Promoting recovery typically involves laying the person down (if possible) and elevating their legs to improve blood flow to vital organs. This positioning aids in counteracting the effects of shock. It’s also essential to monitor the casualty for any changes in their condition and provide reassurance until emergency medical services can take over.

In contrast, ensuring safety and comfort includes avoiding actions that could exacerbate the shock. Keeping the person sitting upright can hinder circulatory efficiency, encouraging them to walk can increase strain on the body, and giving them food may not be safe if their condition is severe, as it can lead to complications like choking or nausea.