Final answer:
The strategy being used in this scenario is using opinion leaders.
Step-by-step explanation:
The strategy being used in this scenario is using opinion leaders. The team organizing the campaign has decided to find youth and adults who are trusted by others in the neighborhood and get their buy-ins first so they can persuade others. By leveraging the influence and trust that these opinion leaders have within the community, the team hopes to effectively spread the message of keeping the community clean.