A 19-year-old male was ejected from his vehicle when it struck a tree head-on. The patient is found lying in a prone position on the road. After log-rolling him to a supine position, your partner, who is manually stabilizing the patient's head, opens his airway with the jaw-thrust maneuver. The patient is unresponsive; has copious amounts of blood and large debris in his mouth; and has slow, irregular respirations. You should:

a) Immediately suction the patient's airway to clear the blood and debris
b) Perform chest compressions to support the patient's breathing
c) Administer high-flow oxygen and continue manual stabilization of the head
d) Perform a finger sweep to remove any visible debris in the mouth