C. Something may be wrong the child and the doctor needs to know everything about said child.
Both C and D are the answers. But I will go with D
Since someone would be performing wind sprint activities, it is guaranteed when performing any activity is to get better overtime so I would say to "work above your target heart rate"
If the level is moderate. that's the answer.
Not attempting could lead to not getting it at all. attempting to can potentially get you the money which is an advantage
