Which of the following is a symptom of hypothermia?

Slurred speech is a notable symptom of hypothermia due to the body's core temperature dropping significantly. As the body experiences hypothermia, its ability to function normally begins to decline. The brain's function is affected, leading to mental confusion, difficulty in coordination, and communication issues, such as slurred speech. This occurs as the body directs blood flow away from the extremities to preserve core temperature, impacting cognitive functions and motor skills.

In contrast, while fatigue can be a sign of various conditions, and nausea may occur in some cases, they are not as specific as slurred speech in the context of hypothermia. Increased heart rate typically occurs during the initial stages of hypothermia due to the body’s response to cold stress, but as hypothermia progresses, heart rate may actually decrease. Understanding these symptoms is crucial for recognizing hypothermia and responding appropriately during diving activities.