Which of the following is an advantage of using a film badge?

A film badge indeed provides a permanent record of exposure to radiation for workers in environments such as hospitals and labs. The film within the badge captures the amount of radiation exposure over time, which can be used for monitoring an individual's cumulative dose. This capability is essential for ensuring compliance with safety regulations and for assessing any health risks associated with exposure to radiation.

While the film badge system is considered inexpensive compared to some modern dosimetry systems, its primary benefit lies in the ability to maintain a historical record of radiation exposure. This permanent record serves critical purposes in radiation safety and health physics by allowing for comprehensive tracking over time.

In addition to being a long-term record-keeping tool, film badges are also straightforward to use and provide reliable data when processed correctly. This makes them a fundamental part of radiation safety programs, especially in fields where tracking exposure over long periods is crucial.