Question: What is the primary purpose of the ARP priority level in the context of QoS Flow establishment and modification?
Option 1: To determine the amount of resources allocated to a QoS Flow.
Option 2: To decide which existing QoS Flow to pre-empt during resource limitations.
Option 3: To define the relative importance of a QoS Flow, with higher priority levels indicating greater importance.
Option 4: To specify the type of service associated with a QoS Flow.
Explanation: The ARP priority level is used to determine the relative importance of a QoS Flow, allowing the network to prioritize certain flows over others during resource limitations. This ensures that critical services receive the necessary resources, even in situations where resources are scarce.