Which statement correctly identifies a sign associated with severe hypothermia?

• A. Core body temperature greater than 90
• B. Do not attempt active rewarming can cause shock
• C. Core body temperature less than 90
• D. IV fluid heaters used to heat up fluids

Answer: (C)

Severe hypothermia shows up as a critically low core body temperature, reflecting the body's metabolic processes being overwhelmed by the cold. Saying the core temperature is below 90°F signals a temperature range in which the body’s functions slow dramatically and dangerous complications can occur. This threshold aligns with how clinicians recognize when hypothermia has progressed to a severe state, where shivering may stop and mental status, heart rate, and blood pressure can deteriorate. The other statements describe treatment actions or a warmer temperature, which are not signs of severe hypothermia themselves.