What system allows for the comparison of data on unidentified persons and missing persons?

The National Crime Information Center (NCIC) is a crucial system that functions as a nationwide database maintained by the FBI. It plays an essential role in law enforcement, providing the ability to share important records, including those regarding unidentified persons and missing persons. The NCIC has specific files for missing persons and unidentified persons, allowing investigators to enter and compare data efficiently. This capability significantly enhances the chances of locating missing individuals or matching unidentified bodies to those reported missing across jurisdictions.

Utilizing the NCIC, law enforcement agencies can access and search through a vast amount of information, including personal descriptions, physical characteristics, and other pertinent details. This coordination among various agencies helps streamline investigations and potentially reunifies families with their loved ones by providing a centralized source of information that can be cross-referenced.

In contrast, while the other options may provide some level of information regarding missing persons, they do not operate on the same comprehensive national scale or have the specific dual functionality that is integral to the NCIC.