Which statement about the body's response to heat loss is correct?

When the body's core temperature drops, one of the body's primary mechanisms for generating heat is through shivering. Shivering is an involuntary response that helps increase metabolic heat production. However, when the core temperature falls below approximately 90°F (32°C), the body often becomes unable to maintain this shivering response effectively. This cessation of shivering occurs because the body is then facing significant difficulty in maintaining physiological functions and may be approaching a critical state of hypothermia. At such low temperatures, the body's mechanisms for heat production greatly diminish, and it is at this stage that the risk of life-threatening situations increases significantly.

Understanding the body's response to heat loss is crucial for EMTs, as recognizing the signs and symptoms of hypothermia can lead to timely and appropriate interventions. Therefore, the information about shivering stopping at this temperature is vital for understanding how hypothermia progresses and the importance of monitoring core temperature in affected individuals.