Question: What is the primary purpose of the Relay Service Code in ProSe?
Option 1: To identify a connectivity service provided by the ProSe UE-to-network relay.
Option 2: To authenticate users for proximity-based services.
Option 3: To prioritize traffic in emergency situations.
Option 4: To encrypt data transmitted over the ProSe interface.
Explanation: The Relay Service Code is used to identify a specific connectivity service provided by the ProSe UE-to-network relay, allowing for efficient communication and resource allocation. This code plays a crucial role in enabling proximity-based services, as described in 3GPP TS 23.303.