What device provides information to the Captain's PFD, ND, and E/WD?

The correct answer is the FMGC, or Flight Management and Guidance Computer. This device plays a crucial role in processing flight data and providing the necessary information to various cockpit displays including the Captain's Primary Flight Display (PFD), Navigation Display (ND), and Engine/Warning Display (E/WD).

The FMGC integrates inputs from multiple sources, including navigation sensors and aircraft systems, to deliver accurate information on the aircraft's position, navigation routes, and flight parameters. This allows the crew to monitor and manage flight operations effectively. The information presented on the PFD includes critical flight data like altitude, speed, and attitude, while the ND shows navigation data, and the E/WD provides engine and system warnings, thus making the FMGC essential for safe flying operations.

With regard to the other options, while the PFD, ND, and E/WD themselves display the information, they do not generate or provide this data independently. The ADIRU (Air Data Inertial Reference Unit) provides essential data such as altitude, airspeed, and inertial reference information to the FMGC but is not solely responsible for supplying information to all three displays. The RMP (Radio Management Panel) is primarily responsible for managing radio frequencies and communication