I believe it is B. Because during vigorous exercise, the heart rate and depth of breathing increases to supply muscles with more oxygen.
The answer is <span>only cut back on calories and don't exercise.
Only cutting back on calories has the negative side effects to slow down your metabolism. This make your body need more time to break down every foods that come inside your body and eventually make it easier for you to regain your weight.</span>
Sorry but I cannot be of assistance XD
Not attempting could lead to not getting it at all. attempting to can potentially get you the money which is an advantage
