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

Fact 2: Bears are curious animals.

Given the two facts above, answer the question "Better senses can have a positive impact on the survival of what?" with the following options: 
- bears
 - bacteria
 - pigeons
 - humans
 - tigers
 - rocks
 - Mammal
 - hats


 

 bears        