Which of the following is NOT a function of the EDM?

The correct response indicates that controlling all of the electronic displays in the cockpit is not a function of the Engine Data Monitor (EDM). The EDM's primary purpose is to monitor engine operating parameters, illuminate advisories, and drive selected displays related to engine and system status.

While it does assist in driving specific displays that pertain to engine data and system alerts, it does not, by itself, control every electronic display in the cockpit, such as those related to navigation or communication. Other systems and components in the aircraft are responsible for managing those displays to ensure that the pilot has comprehensive situational awareness.

The other options represent valid functions of the EDM, which focuses on monitoring critical engine information and alerting the crew to any potential issues with engine performance. Thus, identifying option D as the correct answer highlights the specific limitations of the EDM's role within the broader cockpit avionics systems.