Fact 1: Fertilization occurs when a sperm and an egg fuse.

Fact 2: Pregnancy begins with a fertilized egg.

Given the two facts above, answer the question "what begins when a sperm and an egg fuse?" with the following options: 
- Leptospirosis
 - cellular regeneration
 - h2o
 - seeds
 - death
 - pollen
 - pregnancy
 - competition


 

       pregnancy  