다음 글을 읽고 물음에 답하시오.
Team sports such as basketball and soccer provide an opportunity for students to develop skills and to enjoy working and competing together as a team. However, in many school physical education programs, team sports dominate curriculum at the (a) expense of various individual and dual sports, like tennis, swimming, badminton, and golf. In such cases, the students (b) lose the opportunity to develop skills in activities that they can participate in throughout their adult lives. Only through a balanced program of team, dual, and individual sports is it possible to develop well-rounded individuals.