Question: What characterizes a 'pre-arranged' provision of a service in telecommunications?
Option 1: The service is automatically available to all subscribers upon network attachment.
Option 2: The service is made available to an individual subscriber only after specific arrangements with the service provider.
Option 3: The service provision is contingent upon the subscriber's device compatibility alone.
Option 4: The service is temporarily offered during promotional periods without prior notice.
Explanation: This option correctly captures the essence of 'pre-arranged' service provision, emphasizing the necessity for individual subscribers to make prior arrangements with their service provider to access the service, distinguishing it from universally available provisions (subject to compatibility).