Answer:
c. "Salmeterol acts by causing bronchodilation and improving ciliary function."
Step-by-step explanation:
Since the patient is suffering from Cystic Fibrosis. The patient uses inhaled tobramycin [TOBI], dornase alfa [Pulmozyme], ibuprofen, and salmeterol [Serevent Diskus].
He should take a drug like Salmeterol that would improve his ciliary function by causing bronchodilation.