She should probably avoid football, wrestling and cheer-leading, both of these demand some amount of strength - I'd be able to answer better if you had given a list of sports.
Track/Swimming/Tennis/Soccer/Golf: These would all probably be fine.
The answer to this question would be lifting weights.
Anaerobic means "without oxygen". The chemical reaction to make energy is either aerobic which was "using oxygen" or anaerobic. When the intensity is low, oxygen is used because it gives more energy. But using oxygen has a limit, so if the intensity is too high anaerobic reaction will happen.
Anaerobic exercise means that the exercise that will use up so much energy in a short time so that the aerobic reaction can't fulfill the energy demand.
It should be sprinting or lifting weights.
C would be the best answer, but B is great too
