21. What is the main purpose of community service as mentioned in the passage?
B) To improve the quality of life for others.

22. Which of the following best describes why students typically engage in community service?
C) Because they want to help others.

23. What is one possible benefit of community service for students, according to the passage?
B) Developing skills and contacts.

24. According to the passage, which of the following is NOT mentioned as a way students can participate in community service?
D) Running for school office.

25. What type of volunteer work is described as "more complex" in the passage?
C) Starting a non-profit to help homeless people.