You are dispatched to a local elementary school for an injured child. As you approach the child, you note that he is lying at the base of the monkey bars. He is not moving and does not appear to be conscious or breathing. You should:
A. begin immediate rescue breathing.
B. stabilize his head and open his airway.
C. perform a head tilt-chin lift maneuver.
D. assess for the presence of respirations.
