Question

If your knees hurt after a one-week walking regimen, which one of the following workout changes would be mostappropriate? 

A. Wear different shoes.   B. Take a week's rest from exercise.   C. Jog in a swimming pool.   D. Switch to anaerobic exercise.

Answer 1

A. Would be the answer I chose.
It said one of the following WORKOUT CHANGES, so I'm assuming that it doesn't want you to just stop. Different shoes may provide better support, bringing relief to the knees and allowing you to continue your walking workout.