I believe it's the last two. "makes the lungs able to fill more completely" and "helps the blood vessels dilate more easily" hope this helps, have an amazing day :)
Answer:
Your chances of getting in a plane crash are about 0.007% based on what I read in a magazine a few years back. 26, 2020 The odds of being killed on a single airline flight are one in 4.7 million. After that, the likelihood of a plane crash is much lower and people can relax into the flight.
In this case your answer would be
A - <span>Osteoporosis</span>