Family relationships (i think)
Hope it helps!
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.
Because the more someone exerts themselves the more oxygen and carbon dioxide out put ratio is greater. The more you run and the faster you run the more oxygen you loose which is supplied to your muscles including your lungs.
Answer:
2 1/2 is the exact answer. But if it says estimated it would be 3
