You are presented with the question "What happens when sperm swim from men's to women's reproductive organs?" and the following answer choices: 
- by indirect light
 - matter vibrating
 - death
 - competition
 - fertile crescent
 - fertilizer
 - permineralization
 - fertilization

Now knowing that sperm had to swim from male to female reproductive organs for fertilization and and the word for woman means a female of any age, choose the best answer.


 

        fertilization 