Fact 1: Better senses have a positive impact on an animal 's survival.

Fact 2: Cats have excellent eyesight, hearing and sense of smell.

Given the two facts above, answer the question "What has a positive impact on a cat's survival?" with the following options: 
- Cataracts
 - glycogen
 - Hearing
 - Hyperthyroidism
 - food
 - heat
 - hormones
 - Curiosity


 

   Hearing      