Going for a short, brisk walk is the best response to a stressful situation that threatens to throw your plan for behavior change off track.
Answer: A. go for a short, brisk walk
A. would be a good choice because it helps you relax and is healthy.
B. you can overeat and become overweight this way if you turn to junk food.
C. this is not a healthy option especially if you're under 21
D. although this helps, this is too long, and will throw your plan off track