What is the core temperature threshold for defining hypothermia?

Hypothermia is defined as a core body temperature that falls below the normal physiological range due to prolonged exposure to cold conditions. The threshold for diagnosing hypothermia is generally set at below 35°C. At this temperature, the body begins to experience compromised thermoregulation, leading to symptoms such as shivering, confusion, and lethargy.

Temperatures below this threshold indicate increasing severity of the condition. While temperatures below 30°C and 28°C represent more severe states of hypothermia, the initial and widely recognized standard for hypothermia begins at 35°C. This is why the correct answer aligns with this clinical definition and understanding of the condition's severity.