How must an insurer be notified about the termination of a fire policy?

The correct approach for notifying an insurer about the termination of a fire policy is to use registered mail with a fifteen days' notice. This method is significant because it provides a formal, traceable way to communicate the termination, ensuring that both the insurer and the insured have a clear record of the notice. The use of registered mail further documents the date of notification, which is crucial for legal and administrative purposes.

Fifteen days' notice is often required to allow the insurer adequate time to process the termination and adjust their records, which helps in maintaining proper communication and management of policyholder accounts. This level of formality and notice ensures that all parties are protected through proper documentation and adherence to stipulated timelines. Other methods, such as email or phone calls, lack the necessary formality and proof required for such notifications, potentially leading to disputes or misunderstandings about the policy's status.