What is the name of the chemical reaction which occurs in the body to release stored energy from food?

Respiration is the process (chemical reaction) which takes place in the body to release stored energy from food ~

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.