What is the main function of a police K-9 unit?

The main function of a police K-9 unit is to assist law enforcement in detecting drugs and apprehending suspects. K-9 teams are specially trained to use their acute sense of smell to find illegal substances, such as narcotics, which can significantly enhance a police officer's ability to combat drug-related crime. Additionally, these canine units can be used to track suspects or apprehend individuals who are fleeing or resisting arrest, providing an effective tool for ensuring public safety and maintaining law and order.

The options regarding traffic control, assisting in interpersonal conflicts, and providing legal advice do not align with the primary operational capabilities of a K-9 unit. While police may have other units or personnel designated for traffic management and addressing interpersonal disputes, K-9 teams specifically excel in tasks associated with detection and apprehension. Legal advice, on the other hand, falls within the purview of special legal professionals rather than police units. Thus, the role of K-9 units is clearly defined within the context of criminal detection and apprehension, making this option the most accurate.