The film badge or TLD badge primarily provides what type of documentation?

The film badge or thermoluminescent dosimeter (TLD) badge is designed to provide a permanent record of radiation exposure for individuals working in environments where they may be exposed to ionizing radiation. These badges are able to measure and accumulate radiation doses over time, and their readings are taken to assess an individual’s exposure levels accurately.

The data collected by these devices are processes that allow for long-term storage and reference, making them suitable for tracking exposure throughout a person's career in a radiation-related profession. This permanent record is essential for regulatory compliance, monitoring health over an extended period, and ensuring that exposure limits set by safety standards are not exceeded.

While other choices may reference temporary records or exposure estimations, they do not capture the enduring nature of the document provided by film or TLD badges, which is critical in maintaining an accurate history of whole-body exposure over time.