Which of the following is NOT a principle of radiation safety?

The correct choice indicates that maximizing exposure is not a principle of radiation safety. In radiation safety practice, the guiding principles are typically centered around minimizing exposure to radiation, in order to reduce the risk of harmful effects. Limiting exposure ensures that individuals do not receive more radiation than necessary, protecting their health and safety.

Maintaining shielding is another cornerstone principle, as proper shielding can effectively reduce the intensity of radiation that reaches individuals, further minimizing exposure risk. Monitoring and evaluation are also critical, as they involve continuously assessing radiation levels and potential hazards to ensure safety protocols are being followed and to adjust them as necessary.

In summary, while the other options focus on methods to enhance safety from radiation, maximizing exposure directly contradicts the fundamental goals of radiation safety practices.