Which control shows the selected route of flight for the secondary flight plan?

The selected route of flight for the secondary flight plan is displayed on the appropriate control within the cockpit. Specifically, this control allows pilots to easily view and manage different flight plans, including the primary and secondary ones. The correct choice highlights the importance of situational awareness during flight operations, as pilots can quickly toggle between their active flight plans without losing critical information or control during their flights. Understanding the function of this control is essential for effective navigation and flight management, especially in complex environments where quick adaptations to the flight plan may be necessary.