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Answer:

D. Body temperature. The balance between heat produced and heat lost in the body is regulated by the thermoregulatory center in the hypothalamus, which helps to maintain a constant internal body temperature of around 98.6°F (37°C).

Answer:

D. Body temperature.

Explanation:

The balance between heat produced and heat lost in the body is what determines body temperature. When heat production and heat loss are in balance, the body can maintain a normal body temperature of around 98.6°F (37°C). Any disturbance in this balance can cause a change in body temperature, such as fever or hypothermia.