Answer:
Option C
Step-by-step explanation:
In a cellular respiration process, glucose is oxidized to produce carbon dioxide and energy.
The general chemical equation of a cellular reaction is
C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP
ATP is energy molecule which is used by cell in various metabolic processes. CO2 is used by photosynthesizing plants.
Hence, along with CO2, water can also be considered as waste product.