Nurse Maureen witnesses a neighbor’s husband sustain a fall from the roof of his house. The nurse rushes to the victim and determines the need to opens the airway

Nurse Maureen witnesses a neighbor’s husband sustain a fall from the roof of his house. The nurse rushes to the victim and determines the need to opens the airway in this victim by using which method?
a. Flexed position
b. Head tilt-chin lift
c. Jaw thrust maneuver
d. Modified head tilt-chin lift.