Which statement about tourniquet use is correct?

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Tourniquets are used to save life when a severe bleed in an arm or leg cannot be controlled with direct pressure. The goal is to stop arterial inflow to the injured limb so bleeding doesn’t overwhelm the casualty before definitive care arrives. That’s why the best statement is that you apply a tourniquet when direct pressure cannot control life-threatening limb bleeding. It’s important to place the device on a limb, proximal to the wound, and tighten it until arterial flow is stopped, then monitor the patient and transport.

Using a tourniquet on the trunk isn’t appropriate, because a standard tourniquet isn’t designed to reliably control hemorrhage in the chest or abdomen. For trunk or junctional bleeding, you rely on rapid transport, direct pressure, and other hemostatic techniques rather than a limb tourniquet. Also, delaying a tourniquet for wound cleansing isn’t recommended when bleeding is life-threatening; bleeding control takes priority.