Right answer is (c) Glutathione peroxidase
Explanation: Enzyme is referred to as a substance which acts as a catalyst to bring about a specific biochemical reaction. Ribonucleotide reductase, Glutathione peroxidase, and Carbonic anhydrase are the enzymes. Whereas selenium is not an enzyme but a cofactor, which are referred to as additional non protein chemical component of an enzyme which is required for optimum activity.