You are presented with the question "What are like other vertebrates that have a backbone?" and the following answer choices: 
- animals
 - sharks
 - vibrations
 - sound
 - mammals
 - alpacas
 - bees
 - cows

Now knowing that vertebrates are all chordates that have a backbone and mammals are like other chordates in that they have backbones, choose the best answer.


 

     mammals    