Answer:
Because it make you more formal
Explanation:
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.
I would say a. Unintentional
Answer:
B) he is reflecting on the decision made
Explanation: