Answer: first line of defense
Explanation:
Out of all of them I would say CHRIS bc your supposed to run in comfortable shoes for your feet's sake ( so that's a no to Chantelle). You are supposed to run with your arms swinging beside you or however just not still like kevin bc that burns energy you may need to finish the run. You are supposed to lengthen your stride, taking short strides for 1 burns energy and 2 it takes longer. hope this helps.
Pulmonary veins are responsible for carrying oxygenated blood from the lungs back to the left atrium of the heart.
All of the above is the correct answer
