Problem: Who is at highest risk of delirium? Group of answer choices an 82-year-old with dementia who has just had surgery to repair a broken hip a healthy 76-year-old who is in the hospital for elective cosmetic surgery a previously healthy 61-year-old who had an outpatient screening colonoscopy a 43-year-old with a history of smoking who is in the hospital for pneumonia. Need Professional Help?