Final answer:
Time, distance, and shielding are the factors in determining how to protect oneself against the effects of radiation.
Step-by-step explanation:
The factors in determining how to protect oneself against the effects of radiation are: time, distance, and shielding. These three factors work together to minimize the exposure to radiation. Time refers to minimizing the amount of time spent in the radiation environment. Distance involves increasing the distance from the radiation source, as the intensity of radiation decreases with distance. Shielding refers to the use of materials that absorb radiation to create a barrier between oneself and the source of radiation.