What action must be taken within 45 days after proof of loss if the insurer chooses to repair?

When an insurer decides to repair a damaged property after receiving proof of loss, it is essential for the process to begin promptly. The correct action is to start the repairs within 45 days of receiving the proof of loss. This time frame is generally stipulated in many insurance policies to ensure that the insured’s property is restored in a timely manner, which minimizes further loss or damage.

Beginning repairs promptly after agreeing to this course of action demonstrates the insurer's commitment to fulfilling its obligations under the insurance contract. It helps the insured to resume normal use of their property as quickly as possible, thus serving both the insurer's and insured's interests effectively.

The other options do not represent the primary action required by the insurer in this context. Notifying the insured or completing the repairs are important steps, but they come after the initial decision to start the repair process. Holding a meeting is not typically a required step either, as the focus should be on executing the repair work without unnecessary delay.