Though agility, power, and coordinating are all important skills, balance would be the one he should dedicate his attention to. This is because you need balance in order to ride a bicycle properly. This is unless you plan on professionally riding with training wheels.
In here, for this one, i would go with the answer choice Weight training, because if you are over weight, that is a big problem, because you can not regulate well enough, and your body as well..
hope that this helps you. =)
Ask her teacher and friends for help preparing for the paper.
