You are presented with the question "What has a positive impact on a cat's survival?" and the following answer choices: 
- Cataracts
 - glycogen
 - Hearing
 - Hyperthyroidism
 - food
 - heat
 - hormones
 - Curiosity

Now knowing that better senses have a positive impact on an animal 's survival and cats have excellent eyesight, hearing and sense of smell, choose the best answer.


 

   Hearing      