You are presented with the question "What designed for swimming are used for moving faster through water?" and the following answer choices: 
- Limbs
 - fingers
 - feet
 - nose
 - Frogs.
 - Frogs
 - hair
 - Whales

Now knowing that webbed feet are used for moving faster through water by aquatic animals and ducks have webbed feet, designed for swimming, choose the best answer.


 

   feet      