Who is strictly prohibited from crossing or entering any taxiway at Midway?

Answer: B — Badge holders with basic driving privileges

The prohibition against crossing or entering any taxiway at Midway applies specifically to individuals who do not possess the necessary credentials and permissions to be on the airfield, emphasizing safety and security within airport operations. Thus, those categorized as "Badge holders with basic driving privileges" are expected to adhere to strict guidelines that determine their access, especially when it comes to taxiways that are critical zones for aircraft movement. Badge holders with basic driving privileges may have limited or conditional permissions compared to other badge holders with more advanced clearances, such as those who might need to operate on taxiways for specialized duties. Therefore, it is essential that they refrain from crossing or entering taxiways to prevent any potential hazards or infringements on air traffic operations. In contrast, other groups such as airport staff, passengers with special access, and visitors without badges are either granted access under specific regulations or are not authorized to be in restricted areas at all. This delineation ensures that only appropriately trained individuals engage with areas of the airport that involve high-speed aircraft movements.