The correct choice is "none of these." Police officers have four primary duties: keeping the peace, apprehending violators and combating crime, preventing crime, and providing social services. "Keeping the peace" involves the protection of rights of individuals in dangerous situations such as fights or domestic disputes. "Apprehending violators and combating crime" is most commonly associated with police work; however, it makes up the smallest portion of time in an officers career. "Preventing crime" or reducing the crime rate involves the education or the public about criminal threats and reducing the number of situations where criminal activity can occur. Last, "providing social services" is a very important and often overlooked aspect of police work and it includes the following: returning stolen property, directing traffic, providing medical aid, as well as other social services.

"Maximizing the number of police interventions and observations in the community" is the correct answer. This choice outlines the primary precept of aggressive policing patrols. On the other hand, community policing attempts to involve neighborhood residents into policing procedures to make their own communities safer. it is based on the idea that citizens are concerned about crime in their local area and emphasizes cooperation between police and citizens in the identification of neighborhood needs and means necessary to meet them.