You are presented with the question "all chordates have what?" and the following answer choices: 
- food and shelter
 - aerobic capacity
 - flow of electrons
 - gastropod shells
 - a cuticle
 - evolved jaws
 - layers of fat
 - sensory neurons

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


 

      evolved jaws   