You are presented with the question "Harming a certain kind of animal will cause the population of that animal to do what?" and the following answer choices: 
- decrease
 - eat more
 - increase
 - break off
 - threatened
 - reproduce
 - reduce
 - kill them

Now knowing that harming an animal species causes that animal 's population to decrease and species are the different kinds of organisms, choose the best answer.


 

 decrease        