Which of the following is a primary responsibility of airport operations staff?

The primary responsibility of airport operations staff is to coordinate aircraft movements on the ground and in the airspace. This role is essential for ensuring the safety and efficiency of airport operations. The operations staff actively monitors and manages the flow of aircraft, which includes overseeing takeoffs, landings, and ground movements. They work closely with various stakeholders, such as air traffic control, airlines, and ground crew, to maintain effective communication and ensure that all aircraft are handled safely and in a timely manner.

Other options, while they may be important in their respective areas, do not fall under the primary responsibilities of airport operations staff. For example, managing marketing strategies for airlines is generally the responsibility of the airline's marketing team rather than airport operations. Similarly, designing the layout of airport terminals involves architects and engineers, not operations personnel. Lastly, developing in-flight meal options is typically managed by the airline's catering services and not by airport operations staff. This delineation of roles highlights the specialized nature of airport operations in ensuring smooth and secure air transportation.