The ultimate goal of energy metabolism is produce the compound called ATP.
<h3>What is ATP?</h3>
This is known as Adenosine triphosphate and it is referred to as the energy currency of the cell.
It is formed during energy metabolism from energy-yielding nutrients such as carbohydrates etc which was why it was chosen as the most appropriate choice.
Read more about ATP here brainly.com/question/897553
the answer to this problem is c
Water reacting with nitrogen gas i think, since it doesn’t actually react