The question is incomplete as it does not have the options which are:
A. 392
B. 582
C. 917
D. 1,107
Answer:
B) 582
Step-by-step explanation:
The digestion or oxidation of the food substrate provides energy in the form of ATP which can be converted to the SI unit of energy called a calorie.
The oxidation of one gram carbohydrates provides 4 kcal therefore 85 g of carbohydrate provides 85 x 4 = 340 kcal.
The oxidation of one gram of protein provides 4 kcal therefore 20 g of protein provides 20 x 4 = 80 kcal.
The oxidation of fat provides 9 kcal therefore 18 g of fat provides 18 x 9 = 163 kcal.
Therefore the total kcal provided by the food will be-
340 + 80 + 162= 582 kcal.
Thus, 582 kcal is the correct answer.