Final answer:
The escort ratios for airside, sterile, controlled areas, and vehicles at airports depend on specific airport regulations and vary; thus, the correct ratios cannot be determined without the airport's security protocol manual.
Step-by-step explanation:
The escort ratio for various areas within an airport context typically refers to the number of authorized personnel required to accompany a certain number of individuals without clearance in different zones. The correct escort ratios for airside, sterile, controlled area, and vehicle are specific to airport regulations and can vary. However, as this question presents a multiple-choice format without a definitive context, and airport protocols can be highly specific and subject to change, it is not possible to definitively answer without access to the specific airport's security protocol manual or regulations.
It is important to consult the current operational manuals or security guidelines of the specific airport in question to determine the accurate escort ratios. These ratios are vital for maintaining security and ensuring that unauthorized individuals are properly supervised in sensitive areas of an airport.