The correct option is C Ribozyme
Unlike other enzymes, ribozyme is an enzyme that is made of nucleic acid. So, all enzymes are protein except ribozymes.
Arylsulfatase, dehydrogenase and nitroreductase are proteinaceous enzymes.
Arylsulfatase belongs to the class of enzymes called sulphatase.
Dehydrogenase is a member of the oxidoreductases .
Nitroreductases are a class of enzymes that are involved in the reduction of nitrogen-containing compounds.