Which would provide the body with the most energy?

a. Carrying oxygen from the lungs to the cells

b. Breaking the bonds in a disaccharide

c. Breaking a single carbon bond

d. Creating bonds to make a simple sugar

b. Breaking the bonds in a disaccharide. Disaccharides are sugars, sugars are the body's primary fuel. Starch for example is the complex sugar found in plants, broken down in the body to form glucose which is a great source of energy for the body. When the stomach digests food, the carbohydrate in the food breaks down into another type of sugar.