The correct option is B Hydrolytic enzymes
Mature
mammalian sperm cell consists of a head, a neck, a middle piece and a tail. A
plasma membrane envelops the whole body of sperm. The head of mature mammalian
sperm is made of elongated nucleus covered by acrosome. The acrosome is filled
with hydrolytic enzymes that help in fertilization of ovum. These enzymes
called sperm lysins that dissolve the membranes enveloping the ovum and help
the sperm cell to enter the ovum by penetrating egg membrane.