You are presented with the question "What can result in extinction?" and the following answer choices: 
- Harming an animal species
 - scattered light
 - exposure to cold
 - Ignoring an animal species
 - deforestation
 - Helping an animal species
 - DNA damage and mutations
 - Growing food for animals

Now knowing that harming an animal species causes that animal 's population to decrease and regular overfishing can decline an animal population to the point of extinction, choose the best answer.


 

 Harming an animal species        