Where must the requisition and payment be mailed to?

The correct answer is that the requisition and payment must be mailed to the Missouri State Highway Patrol, Motor Vehicle Inspection Division. This is the designated authority responsible for overseeing vehicle inspections and related documentation in the state. By directing payments and requisitions to this division, it ensures that they are processed appropriately and efficiently within the regulatory framework established for motor vehicle inspections in Missouri.

Mailing these items to the Missouri State Highway Patrol allows for proper handling of inspection-related tasks, including maintaining records and issuing necessary permits or approvals. The other options listed, while all relevant entities within Missouri's vehicle management and governmental structure, do not specifically handle the requisition and payment processes tied to motor vehicle inspections like the Highway Patrol division does.