Option D (Esterase) is correct because according to Box 11 in the textbook, Esterase catalyzes hydrolysis reactions and is specifically responsible for the 'Hydrolytic breakdown of organophosphate or carbamate pesticide.' The other enzymes have different functions: Cytochrome P450 is involved in oxidative breakdown through oxidation-reduction reactions, Peroxidase causes oxidative degradation of organometallic compounds, and Oxidase catalyzes redox reactions for oxidation reduction.