Respuesta :
During cellular respiration, organic molecules, such as glucose, are converted into Adenosine Triphosphate which can be used by the organism, so I believe the best answer would be the third option.
The answer is C; Glucose is converted to a variety of forms of stored energy, ultimately to produce ATP, the source of energy at the molecular level. The mitochondria is indeed the powerhouse of the cell, but the energy doesn't go to the nucleus.