ANSWER: C
C is the most correct answer, because while choices A, B, and D are all signs and symptoms of Multiple Sclerosis, some can be more serious than others. The most correct answer are the clinical manifestations of MS that may result in a serious secondary problem for the patient. Dysphagia puts the patient at risk for aspiration pneumonia, and a congested cough is an indication that aspiration has already occurred. It therefore must be dealt with by the health care team first.