Answer:
she needs to work on flexability because if not then it could cause her to rip a muscle and a worse injury.
D because they also make your shoes not sweat
The answer is C) Because nothing in this world is limited, especially not your nowledge base.
Wll first of all start a little hard to see how much would be the most your friend can do and then go slowly so that the muscle gets used to fast movement but especially with a correct diet that must follow step by step.
I hope this works for you