You are presented with the question "What tool can enable evolution?" and the following answer choices: 
- By coral exoskeletons
 - genetic bottle necks
 - animals with backbones
 - extinction
 - A computer
 - Deoxyribonucleicacid
 - sexual reproduction
 - theory of evolution

Now knowing that sexual reproduction increases genetic diversity and evolution requires genetic diversity, choose the best answer.


 

       sexual reproduction  