You have elected to place an endotracheal tube in an unresponsive, apneic patient. Prior to inserting the laryngoscope blade into the patient's mouth, what instruction would you give your partner?

A) "Lubricate the endotracheal tube with a petroleum-based lubricant."
B) "Test the cuff by inflating it with 20 mL of air."
C) "Insert the stylet into the endotracheal tube so that it extends ½ inch beyond the end of the tube."
D) "Hyperoxygenate the patient for 2 minutes with the bag-valve mask."

D