What must be verified upon a student changing to the next fix?

The correct focus is on the importance of verification in air traffic management, particularly when a student transitions to the next fix. When moving to a new fix, it's critical for pilots to confirm any clearance or instructions provided by air traffic control to ensure they are complying with operational directives. This verification step is fundamental to maintaining safety and efficiency in the airspace.

If a pilot does not verify the clearance at this stage, it could lead to misunderstandings about their flight path or altitude, potentially resulting in safety risks or airspace violations. Therefore, confirming the clearance is essential for situational awareness and operational compliance.

While it may be relevant to have an approved flight plan, confirm alternate routing, or understand next altitude instructions, these elements are not as immediate and critical to the context of verifying clearance when changing to a new fix. The current situation demands that the pilot is fully aware of their explicit clearance to ensure adherence to air traffic control guidelines.