Right answer is (d) Alcalase
For explanation I would say: Alcalase is used in detergent industry to remove stubborn strains in liquid from with slurries of enzymes in non-ionic surfactant. Cellulase is used to washi cotton fabrics. α-amylase is used in dishwashing and destarching, whereas serine protease is used in detergents industry as bleaching agents and water softeners.