What must be done if a burial space has been unused for 50 years?

When a burial space has been unused for a duration of 50 years, the appropriate course of action, as indicated in the correct answer, involves the termination of ownership with proper notice. This provision exists to allow cemeteries to manage their resources effectively, especially given that burial spaces are originally designated for the deceased's remaining family and friends to visit.

Long periods of inactivity may signal that the original owners no longer wish or are able to maintain that burial right. The requirement for proper notice ensures that the original owners or their heirs are given the opportunity to reclaim or utilize the burial space before any action is taken by the cemetery. This practice respects property rights while also allowing cemeteries to reclaim land that may otherwise remain unused indefinitely.

The other possible actions, such as selling the burial space without notice or its automatic reversion to the cemetery without follow-up communication, do not adequately ensure the rights of the original owner or their descendants. Such stipulations are designed to protect familial rights, ensuring they are informed and provided an opportunity to act over a substantial time lapse.