what is the definition of cellular respiration?

Question

a. the process of capturing the sun's energy, converting it into oxygen and releasing it into the atmosphere
b. the process of using the chemical energy from hydrogen and oxygen molecules to power life processes
c. the process of using the chemical energy from food and oxygen molecules to power life processes
d. the process of capturing the sun's energy, converting it into sugar and storing it in tissues.

Answer 1

c. the process of using the chemical energy from food and oxygen molecules to power life processes