When administering CPR, how should the victim's head be positioned?

When administering CPR, the victim's head should be positioned level with the chest to ensure the airway remains open and unobstructed. This position facilitates the best possible alignment for effective chest compressions and allows for optimal ventilation during rescue breaths if they are being administered. When the head is aligned level with the chest, it helps to avoid any restrictions in airflow that might occur if the head were tilted too far back or positioned incorrectly. This alignment is crucial for maintaining a clear airway, which is a primary goal during CPR to ensure oxygenation of the brain and vital organs until professional help arrives.