Fact 1: Sperm had to swim from male to female reproductive organs for fertilization.

Fact 2: Development of multicellular organisms is usually initiated by fertilization of an egg by a sperm.

Given the two facts above, answer the question "Where does organism development start?" with the following options: 
- loose soil
 - housing
 - oceans
 - swamp vegetation
 - Plants growth
 - food
 - female organs
 - dry conditions


 

       female organs  