What type of systems are used in the CRJ for navigation and communication?

The correct choice indicates that the CRJ utilizes hybrid combinations of digital and analog systems for navigation and communication. In modern aviation, especially in aircraft like the CRJ, a blend of digital and analog technologies is common. Digital systems have become predominant due to their accuracy, reliability, and the ease with which they can process and display information. However, some legacy systems or certain functionalities may still rely on analog technologies, providing redundancy and compatibility with various older navigational aids.

This combination allows the CRJ to take advantage of the strengths of both technologies. Digital systems enhance precision and data management, while analog systems can offer simpler, straightforward operations, particularly in cases of system failure. Therefore, the choice reflects the practical design of the airplane's navigational and communication systems, ensuring both performance and reliability.