What type of regulations does Title 14 of the CFR primarily address?

Title 14 of the Code of Federal Regulations (CFR) primarily addresses regulations for aircraft operations. This title governs all aspects of civil aviation in the United States, including the design, manufacturing, and operation of aircraft, as well as certification requirements for pilots and air traffic control procedures. These regulations are crucial for ensuring the safety and efficiency of air travel, as they establish operational parameters that must be followed by various entities involved in aviation.

In contrast to this, regulations regarding public transportation, commercial airlines, or cargo transport may fall under different titles or sections of the CFR that focus specifically on those areas. While commercial airlines operate under the umbrella of aircraft operations, the regulations encapsulated in Title 14 provide a broader framework that influences all types of aircraft usage and operation, making the correct answer particularly comprehensive within the context of aviation safety and regulation.