Final answer:
Humidifying air prior to its arrival in the respiratory division prevents dryness of the lung tissue, which is important for protecting the trachea and lungs. So, the correct answer is option c
Step-by-step explanation:
The benefit of humidifying air prior to its arrival in the respiratory division is that it prevents dryness of the lung tissue. As air passes through the nasal cavity, it is warmed to body temperature and humidified, which helps equilibrate the air to the body conditions and reduce any damage that cold, dry air can cause. This process is important for protecting the trachea and lungs, and preventing dryness and irritation of the lung tissue.
So, the correct answer is option c.