Which of the following is a mandatory component when logging a III record inquiry?

The justification for the inquiry is a mandatory component when logging a III (Interstate Identification Index) record inquiry because it ensures that users have a clear and legitimate reason for accessing sensitive information. This requirement is essential for maintaining the integrity and security of the system, as it helps to deter unauthorized or unwarranted access to personal data. Documenting the justification also supports accountability and transparency in the use of law enforcement databases. Having a valid reason for the inquiry is crucial for compliance with laws and regulations governing the use of criminal identification systems.

The other components, while important in different contexts, do not have the same mandatory status in the logging process. For instance, knowing the subject's date of birth helps in accurately identifying the individual, but the justification specifically fulfills a regulatory requirement that promotes ethical access to information.