You Do Not Like to Drive with Your 54-Year-Old Uncle

You do not like to drive with your 54-year-old uncle.He prides himself on being a great driver,but you think that he gets too close behind other drivers.Relative to your uncle's age,why does this concern you? You think that you might get into an accident because,as a middle adult,____.

A) his vision has been reduced significantly
B) he is less able to multitask
C) he is forgetful and reckless
D) his reaction time is slower