Answer:
The answer is: letter d, Perform transillumination and ask the client if bending forward exacerbates the headache.
Step-by-step explanation:
"Rhinosinusitis" is an inflammation of the nasal cavity of the sinuses. Persons having this condition experiences the following symptoms: nasal congestion, facial pain or dental pain, headache, postnasal discharge, cough, etc.
In order to know whether the patient is truly experiencing such condition, it is best to perform transillumination. This will allow the physician to check whether the sinuses are intact and not inflamed.
Asking the client to bend forward will also allow to rule out other conditions. Pain from the sinuses is exacerbated when bending forward. This is because the "sinus passages" are inflamed.
Thus, this explains the answer.