Hypothermia is cooling of the entire body and can be caused by all but which of the following?

Hypothermia occurs when the body's core temperature drops below the normal range, typically due to prolonged exposure to cold environments. The causes listed include various factors that lead to a decrease in body temperature, but prolonged direct exposure to sunlight is not a contributing factor to hypothermia.

Sunlight typically provides warmth rather than cold, and although excessive sun exposure can lead to heat-related illnesses such as heat exhaustion or heat stroke, it does not promote hypothermia. The other options are directly associated with conditions that can lead to a drop in body temperature, such as cold air, snow, ice, and moisture, which facilitate heat loss from the body. Thus, choice regarding prolonged direct exposure to sunlight being an exception to the causes of hypothermia is accurate.