Who is generally regulated by Federal Aviation Regulations (FAR)?

Federal Aviation Regulations (FAR) primarily govern aviation activities within the United States. These regulations cover a wide range of topics relevant to air travel and aeronautics, including the operation of aircraft, pilot certification, air traffic control procedures, and safety standards. FAR ensures that both commercial and private aviation operations comply with safety and regulatory requirements essential for maintaining the safety of airspace and passengers.

The other options focus on areas outside of the direct scope of FAR. For instance, regulations for commercial drivers fall under different federal and state transportation guidelines, international flight operations might be subject to international regulations or agreements rather than purely FAR, and while air traffic controllers do work closely with FAR, they are part of the broader aviation operational framework rather than being the primary focus of these regulations. Thus, the correct answer highlights the central role of FAR in the regulation of aviation activities specifically within the United States.