You are presented with the question "What kind of animal would be an endothermic tetrapod vertebrate?" and the following answer choices: 
- animals in the class aves
 - barks and snarls
 - passenger pigeons
 - Something that is self-aware
 - Generating heat
 - retaining heat
 - absorb light energy
 - it keeps an organism warm

Now knowing that birds are endothermic tetrapod vertebrates and class Aves is for the birds, literally, choose the best answer.


 

 animals in the class aves        