Question: What is the primary factor that determines whether traffic transmission requires additional protection in a 5G system?
Option 1: The type of security procedures supported by the network
Option 2: The sensitivity of the data being transmitted
Option 3: The presence or absence of application layer security
Option 4: The method of individual delivery used by the UE
Explanation: According to the text, "The traffic may require some protection depending on the sensitivity of the data being transmitted." This indicates that the primary factor determining whether additional protection is needed is indeed the sensitivity of the data.