Signs of advanced hypothermia include:

Advanced hypothermia is a serious condition that occurs when the body loses heat faster than it can produce it, leading to dangerously low body temperatures. One of the hallmark signs of advanced hypothermia is the absence of shivering. In earlier stages of hypothermia, shivering is the body's natural response to generate heat; however, as the condition progresses, shivering typically diminishes and may cease altogether, which indicates that the body is losing its ability to generate heat efficiently.

Drowsiness or altered mental status is another critical sign of advanced hypothermia. As the body's temperature drops, cognitive functions can be affected, leading to confusion, lethargy, and a general state of unresponsiveness. This combination of no shivering and drowsiness is indicative of a significant decline in the body's ability to maintain thermal regulation and signals an urgent need for medical attention and warming.

In contrast, the other options describe responses associated with mild hypothermia or completely unrelated conditions. For instance, excessive talking and a rapid heartbeat are not typical of advanced hypothermia and may instead signify a state of anxiety or excitement, which is incompatible with the state induced by severe hypothermia. These physiological responses differ significantly from the life-threatening signs indicative of advanced