The exercise is to decide whether the question accepts the proposed suggestion as a correct answer. If yes, write "True", otherwise write "False".
Question: what is prefix phone number
Suggestion: As telephone technology advanced, the precise significance of the prefix became blurred in many places; 485 in London, UK, was once the GULliver exchange, but now 44207485xxxx is just considered one of many number blocks served by the CLKEN Kentish Town exchange; 4420770703xx is another.
