Question

what is released during pyruvate oxidation? oxygen water co₂ fadh₂

Explanation:

During pyruvate oxidation, pyruvate is converted to acetyl - CoA. One carbon from pyruvate is released as carbon dioxide ($CO_2$). Oxygen is used in the electron - transport chain, water is produced in cellular respiration's final stage, and $FADH_2$ is produced in the citric acid cycle.

Answer:

C. $CO_2$