Answer:
A
Step-by-step explanation:
The chemical equation for cellular respiration is:
C6H12O6 + 6O2 → 6CO2 + 6H2O (+ ATP)
OR: Glucose + Oxygen → Carbon Dioxide + Water (+ Energy)
Since water is on the right side of this equation, it is produced as a result of the metabolic process rather than used up. So, the correct is A.
Hope this helps! You've got this!