Final answer:
During cellular respiration, energy is released and stored in the form of ATP, while other byproducts such as carbon dioxide and water are released as waste.
Step-by-step explanation:
The substance that is released during cellular respiration is c. energy. Cellular respiration is a process in which oxygen is used to break down fuel molecules, such as glucose, to release the stored energy. This energy is primarily stored in the form of ATP (Adenosine Triphosphate). During aerobic respiration, one molecule of glucose, with the aid of oxygen, can result in the production of 36 to 38 ATP molecules. The byproducts of this process are carbon dioxide (CO2) and water (H2O), which are released as waste.