You are presented with the question "Fertilization occurs when a sperm and nuclei what?" and the following answer choices: 
- fuse
 - leave
 - CO 2
 - fusion
 - emerge
 - grow
 - H 2 O
 - procreate

Now knowing that fertilization occurs when a sperm and an egg fuse and fertilization is complete when the sperm and egg nuclei fuse, choose the best answer.


 

 fuse        