What condition is described as the dangerous lowering of the entire body temperature?

Hypothermia is the condition characterized by a dangerous drop in the body's core temperature, typically below 95 degrees Fahrenheit (35 degrees Celsius). This can occur when an individual is exposed to cold temperatures for an extended period, becomes wet, or does not have adequate clothing to retain body heat. The body may struggle to maintain its normal temperature, leading to various physiological responses such as shivering, confusion, lethargy, and impaired motor function. If not addressed promptly, hypothermia can result in serious complications, including cardiac arrest.

In contrast, heatstroke involves an elevation in body temperature due to excessive heat exposure and failure to regulate body heat, whereas frostbite refers specifically to the freezing of body tissues usually in extremities like fingers and toes, and hyperthermia describes a general state of excessively high body temperature, which can occur due to heat exhaustion or other conditions. Therefore, the focus here is on how hypothermia is specifically related to the lowering of body temperature, highlighting why it is the correct answer.