Question: What is the primary purpose of using SUCI in the 5G system?
Option 1: To provide a globally unique identifier for 5G subscriptions
Option 2: To enable law enforcement agencies to track user locations
Option 3: To protect the SUPI over-the-air and preserve user privacy
Option 4: To simplify the authentication process for 5G users
Explanation: The SUCI is used to conceal the SUPI, which is a globally unique identifier for 5G subscriptions. By using SUCI, the 5G system protects the SUPI over-the-air and preserves user privacy, as specified in clause 6.12.2 of the 3GPP TS 33.501 standard.