An effective dose limit is defined as the upper boundary dose that:

An effective dose limit is defined as the upper boundary dose that:

• A. Can be absorbed annually with a negligible risk of somatic or genetic damage to the individual
• B. Can be absorbed, either in a single exposure or annually, with no risk of damage to the individual
• C. Can be absorbed, either in a single exposure or annually, with no risk of somatic or genetic damage to the individual
• D. Can be absorbed, either in a single exposure or annually, with a negligible risk of somatic or genetic damage to the individual

Answer: (D)

Dose limits are upper boundaries set to keep harm from radiation essentially negligible. The best choice states that the dose can be absorbed either in a single exposure or over a year, with a negligible risk of somatic or genetic damage to the individual. This captures two key points: exposure can be acute or cumulative, and while there may always be some tiny risk, it should be kept to a negligible level. The notion of zero risk isn’t used in defining limits, and the other phrasings either imply no risk or omit the appropriate framing of single versus annual exposure, so they don’t match how an effective dose limit is defined.

Dose limits are upper boundaries set to keep harm from radiation essentially negligible. The best choice states that the dose can be absorbed either in a single exposure or over a year, with a negligible risk of somatic or genetic damage to the individual. This captures two key points: exposure can be acute or cumulative, and while there may always be some tiny risk, it should be kept to a negligible level. The notion of zero risk isn’t used in defining limits, and the other phrasings either imply no risk or omit the appropriate framing of single versus annual exposure, so they don’t match how an effective dose limit is defined.