The energy needed to maintain life when a person is at complete digestive, physical, and emotional rest is termed:

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Basal metabolism is the energy needed to maintain basic bodily functions while at complete rest, including respiration and circulation. It accounts for approximately 60-70% of a person's total energy expenditure. The kcalorie (B) is a unit of measure for energy, physiological fuel value (C) refers to the amount of energy that can be obtained from a food once it is metabolized, and the Estimated Energy Requirement (D) is an estimate of the amount of energy needed to maintain energy balance in an individual.

The Energy Needed to Maintain Life When a Person Is