Final answer:
The key principles of radiation safety in the workplace are distance, time, and shielding, which help to minimize radiation exposure.
Step-by-step explanation:
The correct answer to the question about radiation safety in the workplace is C. Distance, time, and shielding. These three key principles are critical for minimizing exposure to radiation. The general rules for protection against radiation are to:
- Keep minimum possible time in the radiation environment - less time means less exposure.
- Keep as much distance from the radiation source as possible - the radiation intensity drops inversely proportional to the square of the distance.
- Use shielding between you and the source of radiation as much as possible - the more the shielding, the less the exposure.
These measures help to reduce the risk of radiation exposure to workers. Occupational settings that require these safety measures often include medical facilities where x-rays are taken and industrial sites where radioactive materials are handled.