The correct answer is (b) Leather industry
Easiest explanation: Bromelain is a plant enzyme that is obtained from pineapple latex and is used in the brewing industry. In the same way, chymotrypsin is an animal enzyme that is obtained from pancreas and is used in the leather industry. Rennet is used in cheese making industry. Penicillin amidases are used in pharmaceutical industry. Proteases are used in the detergent industry.