Question: What is the primary purpose of the `UAE_ChangeUSSManagement` API in the context of Uncrewed Aerial System (UAS) communication?
Option 1: To establish a direct data link between the UAS application server and the UAV for real-time video transmission.
Option 2: To facilitate communication between the UAS application server and the UAE server for managing USS changes, policy updates, and receiving UAV notifications.
Option 3: To authenticate and authorize UAS operators before initiating flight operations within restricted airspace.
Option 4: To provide weather updates and air traffic control information to the UAS application server for safer UAV operation.
Explanation: The correct answer, Option 2, accurately reflects the API's purpose as described. It highlights the key aspects of the `UAE_ChangeUSSManagement` API, which are to manage changes in USS (UAS Service Supplier), update policies, and enable the receipt of notifications from UAS UEs (Unmanned Aerial Vehicles). This is crucial for the efficient and regulated operation of UAS within the defined telecommunications framework. The other options are incorrect as they describe functions not attributed to this specific API in the provided context.