Context: Amber and I were going up there ever few weeks just to spend time with her and get Dad a little relief . Its really hard . Watching her learn to walk again , watching a machine breathe for her , but I ' m glad I was there .
Question: Why my their mother had to learn to walk again ?
Option 0: She may have forgotten how to walk due to Alzheimer 's .
Option 1: None of the above choices .
Option 2: She preferred not to walk and drove instead .
Option 3: She may have to learn to walk after a stroke .
Answer: 3