Which best explains how the human body obtains energy from food?

a. by inhaling oxygen into the lungs

b. by removing dangerous wastes

c. by exhaling carbon dioxide

d. by breaking chemical bonds?

Typically glycolysis. Glycolysis is a process by which sugars (specifically glucose) is broken down into ATP (energy). There are, however, many pathways to derive energy from differently moleculs (including lipids and carbohydrates).