Answer:
A. A decrease in the concentration of hydrogen and oxygen
Explanation:
Catalase's function is to catalyze the decomposition of hydrogen peroxide (H₂O₂), which is a toxic substance for cells, into oxygen (O) and water (H₂O).
The following chemical reaction can represent the catalase enzymatic action:
2H₂O₂ + Catalase → H₂O + O₂
Due to this, as oxygen and hydrogen (H) are structurally essential for the catalase reaction, the decrease in the concentrations of these substances would also reduce the enzyme's action potential.