What is the range a dosimeter must be capable of reading?

The correct choice indicates that a dosimeter must be capable of reading a range up to 200 mR, which corresponds to 0-2 mSv. This range is significant, as it aligns with the levels of exposure typically encountered in occupational settings where radiation safety is a concern.

For effective radiation monitoring, it’s crucial that dosimeters can provide accurate readings at levels that workers may commonly experience during their duties. A reading capability of up to 200 mR is typically sufficient for most routine monitoring without overwhelming the device with too high a range or making it cumbersome and less sensitive to lower levels of exposure.

This choice reflects a balance between sensitivity to lower doses and a sufficient upper limit to capture potential exposure in practical scenarios, ensuring the safety of individuals working in environments with radiation exposure. Higher ranges, while they may cover extreme cases, can dilute the sensitivity necessary to monitor lower, more frequent exposure levels effectively.