You are presented with the question "What characteristics do chordates have? " and the following answer choices: 
- arthropods
 - aerobic capacity
 - annelids
 - protozoa
 - Veins and arteries.
 - backbone and jaw
 - sensory neurons
 - four limbs

Now knowing that vertebrate chordates have a backbone and jaws appear within the vertebrates, choose the best answer.


 

      backbone and jaw   