Phopho-glyceromutases are example of:

Explanation

Option A is correct since lyases are enzymes that catalyze the breakdown of specific covalent bonds and the removal of groups without hydrolysis. Since phosphoglyceromutase catalyzes the following reaction:It is classified as a lyase.Option B is incorrect since hydrolases are enzymes that bring about the breakdown of large complex organic molecules into smaller ones by adding water (hydrolysis) and breaking the specific covalent bonds.Option C is incorrect since ligases are enzymes that bring about the joining together of two molecules.Option D is incorrect since transferases catalyze the transfer of a specific functional group other than hydrogen from one substrate to another. The chemical group transferred in the process is not in a free state.