Discussion

Body functions and related energy expenditure :

Answer: B

The correct match is 1-ii, 2-iii, 3-i.

Daily energy expenditure has three main components:

Digestion of food (the thermic effect of food) accounts for about 10 to 15 per cent (1-ii).
Movement (physical activity) is the most variable part, about 10 to 40 per cent, depending on how active the person is (2-iii).
Resting metabolism (resting or basal metabolic rate) is the largest part, about 55 to 75 per cent (3-i).

Every other code gives the largest share to digestion or to movement, which reverses the usual proportions.

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