Question: What is the purpose of including the 'Cause' information element in a message?
Option 1: To request call setup
Option 2: To acknowledge call connection
Option 3: To initiate call clearing
Option 4: To reject call termination
Explanation: The 'Cause' information element is included in a message to indicate the reason for initiating call clearing, which is an important aspect of managing and terminating calls in a telecom network.