Which of the following variables poses the most risk to X-ray techs?

The proximity to the X-ray device poses a significant risk to X-ray techs due to the nature of ionizing radiation emitted during X-ray procedures. When X-ray techs are close to the source of the radiation, they are more likely to receive higher doses of exposure, increasing their risk of radiation-related health issues over time.

This risk is compounded by the design of X-ray machines, which often require the operator to be within a certain distance to effectively carry out the procedure. The principle of radiation protection emphasizes maximizing distance from the source of radiation to reduce exposure. Therefore, maintaining a safe distance is critical for minimizing risks.

While other variables, such as distance from the patient and length of exposure time, also play roles in exposure risk, proximity to the X-ray device directly affects the radiation dose received. Hence, the correct answer underscores the importance of safe practices and awareness in the workflow of X-ray techs in protecting themselves from potential harm caused by radiation exposure.