Fact 1: Webbed feet are used for moving faster through water by aquatic animals.

Fact 2: Beavers are primarily aquatic animals.

Given the two facts above, answer the question "How do beavers move through water quickly?" with the following options: 
- it keeps an organism warm
 - lowered energy cost
 - heat is produced
 - Males and females
 - They have webbed feet
 - running and lifting
 - heat energy
 - prevents the transfer of heat


 

     They have webbed feet    