Fact 1: Lungs are used for breathing air by land animals.

Fact 2: Elephants are the largest animals on land.

Given the two facts above, answer the question "What uses lungs to breathe air?" with the following options: 
- elephants
 - Frogs
 - humans
 - the sun
 - some mammals
 - monotremes
 - bacteria
 - rock candy


 

 elephants        