ASP Safety Fundamentals Practice Exam

The areas that constitute the sterile area at airports are typically defined by their ability to ensure passenger safety and security throughout the travel process. The sterile area is primarily made up of locations where passengers have undergone security screening and are thus free of potential threats.

In this context, the combination of Domestic, International, and Transborder (U.S.) reflects the various travel pathways that passengers can utilize after they have been screened appropriately. This configuration allows passengers to move throughout the airport without encountering potential security risks from individuals who have not been screened, thus maintaining a controlled environment where only vetted individuals can access certain areas.

The other options either mix categories that do not correspond to the sterilization of airport areas or focus on operational aspects rather than the flow of passenger traffic through secure zones. For instance, the choice referring to Secure, Restricted, and Public areas might imply relationships related to security measures but does not align with the structured flow necessary for a sterile environment.