Right choice is (a) Papain
The explanation is: Papain do not show synzymic properties. It is a protease enzyme that is used in meat tenderization. The following items show synzymic properties:
• Derivative of myoglobin acts as an effective natural ascorbate oxidase and is achieved by attaching (Ru(NH3)5)^3+ to three surface histidine residues.
• Polyglutamic acts as an esterase in the same fashion as the acid proteases for the hydrolysis of 4-nitrophenyl acetate.
• Cyclodextrins synthesized from starch by the cyclomaltodextrin glucanotransferase from Bacillus macerans. Synzymic cyclodextrins are usually derivatized in order to introduce catalytically relevant groups.