Answer:
Service is helping other people and being active in your community.
Step-by-step explanation:
The main point in a paragraph is the most important detail that the writer wants the reader to grasp. To make the point even clearer, supporting details are used. In paragraph 2, the main point is the definition of service which is, helping people and being active in one's community.
To support this definition, an example is given of a group of teens who engage in the service of planting a community garden with their friends. This activity further demonstrates what service is.