Fact 1: Fertilization occurs when sperm swim to an egg inside an archegonium. Fact 2: When conception occurs in the female, a sperm fertilizes an egg. Given the two facts above, answer the question "What happens when a sperm enters an egg?" with the following options: - Conception - It will move. - competition - Menstruation - rapid expansion - The egg multiplies - Sperm reproduce - pollen
A:
Conception