In a 70 kg human body with an estimated body fat of 15%, what percentage of the energy stored is derived from carbohydrate: a. 83 % b. 16 % c. 0.8 % d. 0.002 %

To answer this question, we first need to understand how energy is stored in the human body.

1. The human body stores energy in three main forms: glycogen (carbohydrate), protein, and fat.

2. Glycogen is stored in the liver and muscles and is the body's most easily accessible form of energy. However, the body can only store a limited amount of glycogen, about 2000 calories worth.

3. Protein is not usually used for energy, but can be in certain circumstances.

4. Fat is the body's main form of energy storage. A pound of body fat stores approximately 3500 calories of energy.

5. In a 70 kg human body with an estimated body fat of 15%, the total weight of body fat would be 10.5 kg (or about 23 pounds).

6. If we assume that all of this fat is available for energy, then the total energy stored as fat would be approximately 80,500 calories (23 pounds * 3500 calories/pound).

7. Since the body can only store about 2000 calories as glycogen, the percentage of energy stored as carbohydrate would be 2000 / 80,500 = 0.0248, or about 2.48%.

None of the options provided (83%, 16%, 0.8%, 0.002%) match this calculation. It's possible that there's a mistake in the question or that it's based on different assumptions.