Correct choice is (c) alkaline protease
For explanation: Alkaline protease is used in the leather industry to remove hair from hides. Use of alkaline protease is safer and more pleasant than the use of sodium sulfide which was used traditionally. The enzyme is required in large quantities, but the process should be controlled to improve the quality of leather. Rennet, Papain and Trypsin are used in cheese production, meat tenderization and softening of leather respectively.