Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 18 to 22.

Regular participation in sports offers numerous advantages to individuals of all ages. Firstly, it promotes physical fitness and overall health. ___(1)___ , flexibility, and endurance. ___(2)___ and related health issues such as diabetes and heart disease.
Secondly, sports play a vital role in enhancing mental well-being. When individuals participate in sports, their bodies release endorphins, which are chemicals ___(3)___ Furthermore, being part of a team or engaging in ___(4)___ of camaraderie and self-confidence.
In summary, participation in sports is not just about physical activity; ___(5)___ It promotes physical fitness, enhances mental well-being, and teaches valuable life skills.