How do organisms store and use energy?
a. by changing oxygen into organic compounds
b. by taking electrons from an electron transport chain
c. by making and breaking the chemical bonds in organic compounds
d. by transferring energy through the process of homeostasis

The correct answer will be option-C.

Explanation:

The living organism uses energy to survive through performing metabolic reactions. The metabolism is the characteristic feature of living organisms which enables the organism to survive.

Organism performs the chemical reactions which could help make the energy molecules in the cell and help store energy in the energy molecule like Adenosine triphosphate or ATP.

The energy is stored in the high energy bonds between two phosphate groups which get utilized by the organism after a breakdown which releases a high amount of energy.

Thus, Option-C is the correct answer.