The 4-D's (deny-property, detect-entry, delay, and deter) are used to eliminate what?

The concept of the 4-D's—deny, detect, delay, and deter—focuses on reducing the opportunities for crime to occur. Specifically, by implementing strategies that encompass these four elements, law enforcement and security measures aim to minimize the likelihood that a crime will take place.

Denying property means making it physically harder to access valuable items, detecting entry involves creating systems that alert property owners of potential intrusions, delaying criminals gives law enforcement more time to respond to incidents, and deterring potential offenders through visible security measures or community vigilance can prevent them from attempting a crime in the first place.

In this context, "opportunity" is the correct choice, as the 4-D's are designed to limit the accessible opportunities that could lead to criminal acts, ultimately reducing the overall risk of crime. Other options like crime, theft, and harm may be outcomes or results of opportunities presented, but they are not the primary focus of the 4-D's framework aimed specifically at tackling the conditions that enable criminal activity.