Fact 1: Gametes then unite in fertilization and form a diploid zygote.

Fact 2: Diploid zygote forms multicellular embryo in venter.

Given the two facts above, answer the question "What can lead to the formation of multicellular embryo in venter?" with the following options: 
- Something that makes plants green
 - Something made from fermented ricce
 - A compound that donates proton
 - By wind and rain
 - reproduction
 - Fertilization of gametes
 - metabolic reaction
 - heat produced


 

      Fertilization of gametes   