A 50-year-old woman is brought to the emergency department aft | Neurology collections 2020

A 50-year-old woman is brought to the emergency department after suddenly experiencing right upper and lower extremity weakness while jogging on a treadmill. Her weakness gradually worsened over the next hour, and she had severe headache, nausea, and vomiting. The patient has a history of chronic hypertension but stopped taking antihypertensives several months ago. She does not use tobacco but drinks 1 or 2 glasses of wine on weekends. Blood pressure is 230/112 mm Hg and pulse is 76/min and regular. On physical examination, the patient is stuporous and responds to painful stimuli only. There is right hemiplegia, right hemisensory loss, and leftward deviation of the eyes. Which of the following is the most likely diagnosis?