Which of the following indicates that the aircraft is operational and safe to move?

The indication that the aircraft is operational and safe to move is when all systems are green. This means that all critical systems on the aircraft are functioning correctly and have passed their operational checks. In aviation, a green status typically means that there are no warnings, malfunctions, or caution lights active, signaling that the aircraft is in a ready state for operations.

Having all systems green ensures that the aircraft can be maneuvered without any immediate risk of system failure or safety issue. It confirms that the aircraft can take off, land, or taxi safely under the current conditions.

In contrast, while items such as briefing completion or having personnel in position are essential for operational safety and communication, they do not directly indicate the mechanical readiness of the aircraft itself. Furthermore, chocks in place signifies that the aircraft is secured and stationary, but they need to be removed for the aircraft to be moved. Therefore, the status of all systems is the primary indicator of the aircraft's readiness to move safely.