Final answer:
The correct answer is option b. oxidoreductase.
Step-by-step explanation:
To determine the classification of the enzyme that catalyzes the given reaction, we need to understand the nature of the reaction. Enzymes are classified into six major classes, each based on the type of reaction they catalyze. These classes are oxido-reductases, transferases, hydrolases, lyases, isomerases, and ligases.
Oxido-reductases are enzymes that catalyze oxidation-reduction reactions. They participate in the transfer of electrons by adding or removing hydrogen atoms from the substrate. An example of an oxido-reductase is lactate dehydrogenase, which catalyzes the conversion of pyruvate to lactate.
Transferases are enzymes that catalyze the transfer of a specific functional group from one molecule to another. Alanine aminotransferase is an example; it transfers an amino group from alanine to α-ketoglutarate.
Hydrolases are enzymes that catalyze the hydrolytic cleavage of chemical bonds, such as the bonds within proteins and polysaccharides.