When fertilization occurs that leads to formation of a zygote, which of the following processes takes place?

A. The tail of the sperm fuses with the egg cell
B. Both tail and head of the sperm fuse with the egg cell
C. The nucleus of the sperm fuses with the egg cell
D. The egg cell develops on its own without the sperm

Correct Answer: Option C

C. The nucleus of the sperm fuses with the egg cell