Question: What is a key requirement for the 5G system in terms of priority policies among different services and users?
Option 1: To allow flexible mechanisms to establish and enforce priority policies based on regional or national regulatory and operator policies.
Option 2: To provide a fixed set of priority levels that cannot be changed by the network operator.
Option 3: To prioritize all emergency services over other types of services without exception.
Option 4: To ignore regional or national regulatory and operator policies when establishing priority policies.
Explanation: The correct answer is Option 1 because the 5G system needs to allow flexible mechanisms to establish and enforce priority policies among different services (e.g., MPS, Emergency, medical, Public Safety) and users. This flexibility is necessary to accommodate regional or national regulatory and operator policies that may vary.