The patient is a 72-year-old woman who is suspected of having a stroke. She is having difficulty swallowing, and her secretions must be suctioned to maintain a clear airway. Which of the cranial nerves could be impaired as a result of the stroke?

A) Facial nerve
B) Trochlear nerve
C) Glossopharyngeal nerve
D) Hypoglossal nerve

Answer: C) Glossopharyngeal nerve