You are presented with the question "What do all vertebrates have?" and the following answer choices: 
- fur and fat
 - sensory neurons
 - Veins and arteries.
 - four limbs
 - jaws and scales
 - a slimy coat
 - jaw and a backbone
 - feathers

Now knowing that vertebrates are all chordates that have a backbone and all chordates have jaws, choose the best answer.


 

       jaw and a backbone  