The correct option is (c) Synzyme
To explain I would say: Synzymes are synthetic polymers or oligomers with enzyme-like activities possess two structural entities, a substrate-binding site and a catalytically effective site. Coenzymes are non-protein organic molecules that bind loosely to an enzyme. Examples of coenzymes are NADPH, ATP, NADH, NAD^+, NADP^+, etc.