Caloric values for proteins, carbohydrates and fats are

The correct option is 5.65 cal, 4.1 cal, and 9.45 cal respectively.

To understand why this is the correct answer, we need to look at how energy content in food is measured. The energy value of food is defined in terms of heat energy, measured in calories (cal) or kilocalories (kcal). There are two types of energy values commonly discussed for nutrients:
1. Gross Calorific Value: The amount of heat liberated from the complete combustion of 1 gram of food in a bomb calorimeter (a closed metal chamber filled with oxygen).
2. Physiological Value: The actual amount of energy produced by the oxidation of 1 gram of food inside the living body.

The values provided in the correct option represent the gross calorific values of the three macronutrients:
• Proteins: The gross calorific value is 5.65 kcal/g (represented as 5.65 cal in the option).
• Carbohydrates: The gross calorific value is 4.1 kcal/g (represented as 4.1 cal in the option).
• Fats: The gross calorific value is 9.45 kcal/g (represented as 9.45 cal in the option).

In contrast, their physiological values are slightly lower due to incomplete digestion and absorption in the body, being 4.0 kcal/g for carbohydrates, 4.0 kcal/g for proteins, and 9.0 kcal/g for fats. Since the question asks for the specific set matching these standard biochemical measurements, the correct values are 5.65 cal, 4.1 cal, and 9.45 cal respectively.