Which of the following provides the best protection from radiation exposure?

The best protection from radiation exposure is achieved through increased distance. According to the principles of radiation protection, the intensity of radiation decreases significantly as the distance from the source increases. This follows the inverse square law, which states that doubling the distance from a radiation source reduces the exposure to one-fourth of the original intensity.

While shielding, such as lead aprons, is effective at attenuating radiation, and minimizing time reduces cumulative exposure, increasing distance is often the most effective strategy in reducing exposure. The effectiveness of increased distance is a fundamental concept in radiation safety practices and is pivotal in settings where radiation sources are present. Therefore, prioritizing distance as a protective measure can greatly enhance safety and reduce the risk of adverse health effects from radiation.