Answer with Explanation:
Babies are formed when the sperm cell from the male testicular gonad meets with the women's egg cell (from the ovaries). This penetration causes the "fertilization process." This naturally occurs two weeks from the woman's last day of menstruation. The fertilization allows the egg to rapidly divide. This is followed by "implantation," a process whereby the blastocyte attaches to the woman's endometrium. Around three weeks, the blastocyte is formed into an embryo. This will be called fetus once the woman reaches its 8th week of pregnancy.
This is a brief process regarding your question on how babies are formed.
