You are presented with the question "Feathers help birds fly and " and the following answer choices: 
- Absorb light
 - get  nutrients
 - keep warm
 - heat produced
 - find food
 - staying warm
 - maintain water
 - protect them

Now knowing that feathers help birds fly and provide insulation and penguins keep warm with layers of insulation, choose the best answer.


 

   keep warm      