a, because exercise doesn't just aid the prevention of certain diseases, it helps prevent many diseases. i would've chosen d if it wasn't so specific but a is the correct answer.
The answer is B. Fragile… Osteoporosis is a condition that makes bones more fragile. ( risk of breaking easy)
Sports creates sportsmanship, sports can support nation building providing infrastructure for the economy, fans consist of a variety of different people and sports or sporting events bring people together
Hope this helps!!!
