Which One of the Following Alternatives Is the Best Example

Multiple Choice

Which one of the following alternatives is the best example of service learning?

A) Struggling readers in a first-grade class spend three days a week with parent volunteers who provide one-on-one tutoring in basic reading skills.
B) Student council members at a middle school coordinate a schoolwide garage sale to raise money for new athletic equipment for the school gymnasium.
C) Students in a fourth-grade class work in small cooperative groups to help one another make sense of challenging reading material.
D) Students in a biology class collect samples of local pond water, evaluate them for bacteria content, and report their findings to the city health department.