Final answer:
d. "I will rinse my mouth after I use this inhaler."
The statement that indicates that the client should rinse their mouth after using a fluticasone inhaler shows an understanding of its proper use, since this helps prevent oral thrush, a potential side effect.
Step-by-step explanation:
The correct understanding of how to use a fluticasone inhaler is demonstrated in the client statement that indicates they should rinsing the mouth after inhaler use. This action is necessary to prevent oral thrush, a common side effect of inhaled corticosteroids like fluticasone. Fluticasone is a long-term control medication and is not meant to be used as a rescue inhaler during an asthma attack. Instead, it is used regularly to reduce inflammation and prevent asthma attacks. Avoiding dairy products is not a requirement for the use of fluticasone, and taking two puffs consecutively without waiting may not follow prescribing instructions.