Which One of These Factors Increases the Metabolic Rate to the Greatest

Question

Which one of these factors increases the metabolic rate to the greatest extent
A)increased skeletal muscle activity
B)increased mental effort
C)increased dietary fibre intake
D)increased brown fat deposition

Accepted Answer

Skeletal muscle tissue is highly metabolic and accounts for a large portion of the body's total oxygen consumption and energy expenditure. When skeletal muscle activity increases, the metabolic rate increases to support the increased energy demand. This can be achieved through exercise or physical activity. Increased mental effort and dietary fiber intake may have minor effects on metabolic rate, whereas increased brown fat deposition (which is most active in infants and decreases with age) may have a moderate effect on metabolic rate.