Final answer:
Requiring 100 hours of community service for graduation is supported by the fact that teenagers are primarily interested in episodic volunteering and that educational organizations are now the most popular place for teenage volunteering.
Step-by-step explanation:
The article suggests that requiring 100 hours of community service for graduation is supported by two details. First, it states that teenagers are primarily interested in episodic volunteering, contributing 99 or fewer hours a year. Requiring 100 hours of community service would encourage teenagers to engage in more sustained and impactful volunteering, benefiting both the students and the community. Second, the article highlights that educational or youth service organizations are now the most popular place for teenage volunteering, surpassing religious organizations. Requiring community service hours would align with this trend and encourage more students to serve in educational organizations, which can provide valuable learning experiences.