You are presented with the quiz "Reptiles are a class of tetrapod vertebrates that what" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "reptiles are a class of tetrapod vertebrates that produce amniotic eggs" and "animals able to lay shelled eggs are called amniotes ". 

So, what's the best answer to the question?


 

    lay shelled eggs       