Review Question - QID 109415

A 80-year-old man is brought to the emergency department with complaints that he "can’t control his left leg”. His symptoms started a few hours ago. He was outside taking a walk with his wife when suddenly his leg shot out and kicked her. His past medical history is notable for diabetes, hypertension, and a myocardial infarction 5 years ago. He smokes 1-2 cigarettes/day. He does not use alcohol or illicit drugs. On exam, the patient has intermittent wide, flinging movements that affect his proximal left arm. Which of the following parts of his brain is most likely damaged?