Which area of the airport requires personnel to wear identification badges?

The correct choice is that personnel must wear identification badges in the SIDA, which stands for Security Identification Display Area. This area is critical for airport security, as it includes zones that are secured against unauthorized access, where only individuals with proper identification are allowed. The requirement for personnel to have visible identification badges in SIDA helps ensure that all individuals within these sensitive areas have been vetted and authorized, thus enhancing overall airport safety and security.

The other options refer to different aspects of airport operations but do not have the same identification requirements. For example, LZIA pertains to landing zones that may not have specific security protocols like SIDA. RSA stands for Runway Safety Area, which is focused more on the physical safety of aircraft operations than personnel identification. TAC refers to Terminal Area Control, related to air traffic management, without specific identification badge mandates.