What are the three main procedures for operating a vehicle in the CMA?

The three main procedures for operating a vehicle in the Controlled Movement Area (CMA) focus on ensuring safety, compliance with air traffic control, and effective communication. The correct choice emphasizes the importance of obtaining approval from Air Traffic Control (ATC) before entering the CMA, which is crucial for maintaining safe and organized operations in areas with aircraft movements. Reading back instructions ensures that the instructions given by ATC are clearly understood and followed, reducing the risk of miscommunication. Monitoring the frequency allows vehicle operators to stay updated on any changes or instructions from ATC, ensuring they remain aware of the dynamic environment around them.

The other choices do not effectively capture the essential procedures for operating within the CMA. They focus more on general vehicle operation or safety guidelines that, while important, do not address the specific needs and procedures for operating a vehicle in an area with active aircraft operations.