Final answer:
All the mentioned options, such as the use of a nasal airway, an oral airway, and a two-handed mask ventilation technique, may be helpful in making mask ventilation easier. These methods ensure the effective delivery of air and protect the respiratory tract.
Step-by-step explanation:
When it comes to making mask ventilation easier, several techniques may be helpful. The inclusion of a nasal airway can assist by providing a clear path for air to travel into the lungs. An oral airway can aid by maintaining an open passageway through the mouth and throat. Two-handed mask ventilation is a technique used by healthcare professionals to ensure a better seal and more effective ventilation. Therefore, all of the mentioned options, A) Nasal airway, B) Oral airway, and C) Two-handed mask ventilation, can be beneficial in facilitating mask ventilation.
Regarding the respiratory system, air is warmed and humidified in the nasal passages, serving several functions. This includes warding off infections, decreasing sensitivity during breathing, and preventing damage to the lungs. Therefore, the answer to the provided reference question would be d) all of the above.