Answer:
The correct answer is observe the chest for adequate rise.
Explanation:
Mask bag ventilation plays an essential role (even more than intubating the patient), allowing adequate oxygenation prior to intubation, or as a "rescue oxygenation" mode in case of a laryngoscopy or failed intubation. While we can oxygenate the patient, we can take it easy to get a definitive airway.
