You are presented with the question "Dogs use hearing for " and the following answer choices: 
- food and shelter
 - population movement
 - sensing sound
 - circulatory systems
 - chemical messengers
 - courtship
 - support
 - it can be seen

Now knowing that hearing is used for sensing sound by animals and if an animal is a dog then it is a mammal, choose the best answer.


 

   sensing sound      