Fertilization occurs when sperm swim to an egg inside an archegonium, and if fertilized, the egg implants itself in the uterus. Given these facts, the egg implants itself in the uterus after sperm does what among the following options:
- permineralization
 - release more eggs
 - rapid expansion
 - migrate
 - swim to the sea
 - reproduce
 - swim to an egg
 - drown in the uterus


 

       swim to an egg  