Which scenario best illustrates a reactive approach in policing?

The scenario of responding to a report of a loud party effectively exemplifies a reactive approach in policing because it involves law enforcement responding to an incident after it has been reported by the public. This type of policing is characterized by reacting to specific calls for service or complaints rather than proactively engaging with the community or addressing issues before they escalate.

In contrast, engaging with the community or conducting routine traffic stops are more about ongoing proactive efforts to maintain order and build relationships rather than responding to incidents that require immediate police intervention. A police initiative aimed at preventing domestic violence represents a proactive strategy designed to address potential problems before they manifest, focusing on prevention rather than reaction.