Question: What happens when no 5G cell can be selected after an intensive search in the 5GMM-DEREGISTERED state?
Option 1: The UE enters a high-priority search mode for 3GPP cells.
Option 2: The UE enters a low-rhythm search mode for 3GPP cells and no 5GS services are offered.
Option 3: The UE switches to non-3GPP access technology.
Option 4: The UE initiates an emergency call procedure.
Explanation: When no 5G cell can be selected after an intensive search in the 5GMM-DEREGISTERED state, the UE enters a low-rhythm search mode for 3GPP cells. This means that the UE will continue to search for available 3GPP cells at a lower frequency, but it will not offer any 5GS services during this time.