Review Question - QID 213734

A 63-year-old man is brought to the emergency department with sudden onset right-sided weakness. Roughly 1 hour ago, he developed difficulty walking so he called an ambulance. He denies loss of consciousness or visual complaints. The patient has type II diabetes mellitus and hypertension. He takes metformin and captopril. The patient's temperature is 98.1°F (36.7°C), blood pressure is 178/105 mmHg, pulse is 78/min, and respirations are 13/min. On physical examination, the patient is awake, alert, and oriented to name, place, and date. Mild dysarthria is noted. Strength of flexion and extension of the right upper and lower extremities are 2/5. There are no sensory disturbances noted on exam. Non-contrast CT scan of the head reveals no acute findings. This patient's symptoms are likely due to an occlusion of which of the following arteries?