Final answer:
Dosimeter badges should be worn on the outside of PPE to measure actual radiation exposure. They record the dose received by the individual and are critical for safety in environments with ionizing radiation.
Step-by-step explanation:
When working in environments where exposure to radiation is a concern, such as medical imaging or cancer therapy settings that use X-rays and gamma rays, properly wearing a dosimeter badge is critical. The correct placement for a dosimeter badge is an option (C) On the outside of the PPE (Personal Protective Equipment). This is because the dosimeter needs to measure the dose of radiation the individual is actually being exposed to, not the dose after it has been attenuated by lead or other protective barriers. Fast films and shielding, like lead aprons, are used to limit patient exposure, and the technician is also protected by standing behind a lead-lined barrier. However, to ensure an accurate reading of occupational exposure to radiation, the dosimeter must be worn on the outside of all protective gear.