Radiation refers to the propagation of energy through waves and particles. In lab safety contexts, it almost always refers to the radiation of alpha, beta, or gamma particles produces through nuclear forces, such as the decomposition of atoms into more stable elements. All forms of radiation can be dangerous depending on the amount of energy supplied (UV radiation from the sun is a notable example), but these forms of nuclear radiation have particular caution around them as they are often not detectable by direct means and be dangerous far in excess of their perceived danger. It is possible, especially in lab contexts, to have a material that would kill anyone who touches it directly some days later, simply because of the sheer number of subatomic particles being emitted as it decays. Other materials might have long term, fatal, health effects if exposure is constant over a long enough period of time. Cancer is one of the most famous results of overexposure to radiation.
So, Radiation Safety refers to the processes and procedures to ensure safety when dealing with radioactive material.
The above is a list of multiple choice questions made by a lab. Some of the questions appear extremely passive aggressive in tone. For example, nobody would actually believe that "Radiation Safety personally are clairvoyant (that is to saying, possessing the supernatural power of seeing across distances or into the future), but a thoughtless person, uncaring of the consequences of their actions, may act in a way identical to one who trusted a magical radiation safety team to handle things without being told.
Many of these answers are hyper specific, and, as pointed out, it is entirely possible they are based on frustrating personal examples. The vast majority of these questions feel like "common sense" would prevent any issues, but they fact these questions need to exist is strong evidence that common sense has failed time and again.
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