Which one of the following is NOT a symptom of severe hypothermia?

Severe hypothermia is characterized by a significant drop in body temperature, typically below 95°F (35°C), which can lead to a variety of symptoms as the body's systems begin to fail.

The presence of shivering is indicative of the body's initial response to cold—it serves as a mechanism to generate heat. In fact, shivering is one of the first signs of mild to moderate hypothermia and may continue until the body loses the ability to generate sufficient heat or energy, which is often an early sign of severe hypothermia.

In addition to shivering, other symptoms of severe hypothermia include inability to coordinate movements, confusion, and a slow heart rate, all of which reflect the body's deteriorating state as it becomes unable to maintain normal physiological functions. Therefore, shivering is present in the early stages and is not considered a symptom of severe hypothermia, making it the correct option in this context.