What feature of the claims-made CGL provides an unlimited extension for making claims for losses that occurred during the policy period?

The correct choice is the Supplemental Extended Reporting Period (ERP). This feature is essential for providing additional coverage beyond the standard claims-made policy limits. A Supplemental ERP allows a policyholder to report claims for incidents that occurred during the policy period even after the policy has expired, typically offering an unlimited extension for making those claims.

This is crucial for businesses that may encounter claims long after their policy has ended, ensuring that they remain protected against unforeseen occurrences. The Supplemental ERP specifically differs from the basic ERP in that it allows for a longer timeline to report claims, thus offering an added layer of security to the policyholder.

While the retroactive date establishes the timeline from which claims can be made, and the standard ERP allows for a limited period to report claims after the policy ends, the Supplemental ERP goes further by not imposing the typical time constraints. Consequently, this makes it a robust option for those looking for comprehensive long-term protection against claims.