If you fun at the same intensity for 1 mile, you are preforming a wind sprint, low impact activity, high impact activity, combination of all the above.

I believe the correct answer is you are performing a low impact activity because it would not be a wind sprint since a wind sprint would be sprinting and   High-impact exercise is one of the most effective ways to burn more calories since it's easier to get your heart rate up when you're jumping around more. High-impact exercise also strengthens the bones. Experts know that subjecting the bones to stress, like high impact activity, causes them to add mass in response. so there for your answer is b