Answer:
The correct answer will be option-A.
Explanation:
In aerobic respiration, the energy equivalents are produced in all the stages that are glycolysis, link reaction and citric acid cycle.
These reducing equivalents contain energy in the form of electron pairs which gets transported through the electron transport chain and helps in the generation of the ATP molecules. These electrons at the last stage of the electron transport chain are transferred to the oxygen which reduces the oxygen to form the metabolic water.
Thus, option-A is the correct answer.