Which of the following is NOT a primary purpose of the Visitor Processing post?

The primary purposes of the Visitor Processing post are focused on managing and verifying the flow of visitors into a facility. Verifying the visitor's identification is crucial for security, ensuring that only authorized individuals gain access. Fabricating and/or issuing visitor passes allows for the tracking of individuals within the premises, which is vital for security management. Maintaining data on visitor logs provides a record of who has entered or exited the facility, which can be important for accountability and emergency response.

Determining the clearance level of a visitor, however, is not typically a function of the Visitor Processing post. This task is usually handled by a security clearance management system or another department that focuses specifically on security clearances. Therefore, option C stands out as not being a primary purpose of the Visitor Processing post, as it does not align with the immediate responsibilities of verifying and processing visitors on-site.