The optimum calories to be provided by proteins should be: (A) 5-10%, (B) 10-15%, (C) 15-20%, (D) 20-30%
Answer is B. The main source of energy in the diet is carbohydrates derived largely from cereals and provide 50-80% of daily intake. Most families derive 10-12% of energy from proteins. Energy from fats may vary from 5-30%.Ref: Park; 23rd ed; Pg 634