Answer:
Hey there! I have the options so i know what they are, i will try my best to answer properly. Your answer would be.... Try a greater variety or activities, or D.
Explanation:
All sarah does is run, she need to be outside doing more than just running.
Kevin and maggie have a much greater variety of activities than Sarah.
If sarah doesnt try new activites soon, her body will get used to running and it wont have an effect anymore.
And she would need new activities.