What is the proper position for administering rescue breaths on an adult?

Administering rescue breaths effectively requires proper positioning of the victim's head to ensure that the airway is open and unobstructed. The technique of lifting the chin and tilting the head back slightly is crucial for aligning the airway and facilitating the flow of air into the lungs.

This maneuver, known as the head-tilt/chin-lift technique, helps to lift the tongue away from the back of the throat and opens the airway, which is essential during rescue breathing. Proper head positioning maximizes the chances that the breaths you administer will reach the lungs and be effective in providing oxygen to the victim.

While the other options may suggest alternative methods, they do not provide the same level of assurance in maintaining a clear and open airway. Therefore, understanding the importance of the chin lift and head tilt can significantly enhance the effectiveness of rescue breathing in an emergency situation.