True or False: Frozen data in Splunk is lost unless sent to an archive.

Frozen data in Splunk refers to data that has reached the end of its retention period and is no longer searchable in the Splunk environment. When data is frozen, it effectively gets removed from the searchable index unless it has been specifically configured to be archived. The option that states it is true emphasizes the importance of managing data retention and archival strategies in Splunk.

If frozen data is not sent to an archive, it becomes unrecoverable; this characteristic underlines the necessity of planning data lifecycle management effectively. Retention settings determine how long data is kept in the index layer before becoming frozen; however, without an archival process in place, frozen data cannot be retrieved. Hence, once data transitions into a frozen state without an archive, it is indeed lost, which validates the assertion that the correct answer is true.