Which statement best describes energy expenditure components?

Which statement best describes energy expenditure components?

• A. Resting metabolic rate, digestion energy, energy expenditure from physical activity
• B. Basal metabolic rate, sleep duration, hydration status
• C. Total caloric intake, digestion energy, respiration rate
• D. Basal metabolism, physical activity energy, energy storage

Answer: (A)

Energy expenditure is made up of three major components: resting energy expenditure (the energy your body uses at rest to maintain basic functions), the thermic effect of feeding (the energy required to digest, absorb, and process nutrients), and energy spent on physical activity (all movement, including exercise and everyday activity). The statement that lists resting metabolic rate, digestion energy, and energy expenditure from physical activity captures these three components, so it best describes how energy is expended. Resting metabolic rate estimates the baseline funds the body needs to function; digestion energy corresponds to the thermic effect of food; and energy expenditure from physical activity accounts for voluntary movement. The other options mix in elements that aren’t energy-expenditure components—sleep duration and hydration aren’t energy-burn processes by themselves; total caloric intake refers to calories in, not calories out; respiration rate isn’t a separate expenditure component in this framework; and energy storage describes where energy goes, not how much is burned.

Energy expenditure is made up of three major components: resting energy expenditure (the energy your body uses at rest to maintain basic functions), the thermic effect of feeding (the energy required to digest, absorb, and process nutrients), and energy spent on physical activity (all movement, including exercise and everyday activity). The statement that lists resting metabolic rate, digestion energy, and energy expenditure from physical activity captures these three components, so it best describes how energy is expended. Resting metabolic rate estimates the baseline funds the body needs to function; digestion energy corresponds to the thermic effect of food; and energy expenditure from physical activity accounts for voluntary movement. The other options mix in elements that aren’t energy-expenditure components—sleep duration and hydration aren’t energy-burn processes by themselves; total caloric intake refers to calories in, not calories out; respiration rate isn’t a separate expenditure component in this framework; and energy storage describes where energy goes, not how much is burned.