Reducing which of these factors will NOT help reduce radiation exposure?

Reducing voltage as a means of minimizing radiation exposure does not apply in the context of factors that directly relate to exposure levels.

In the realm of radiation exposure, commonly accepted principles include the time spent near a radiation source, the distance from the source, and the use of shielding. Time and distance are established practices in radiation safety; less time spent close to a source and greater distance from it both effectively reduce exposure. Shielding involves the use of materials that block or absorb radiation, thereby protecting individuals from exposure.

Voltage, on the other hand, typically relates to the energy of the radiation emitted and not directly to the operational aspects that reduce exposure during procedures. Adjustments to voltage can alter the characteristics of the emitted radiation, but they do not inherently decrease the amount of radiation a person may be exposed to in the same way that manipulating time, distance, or implementing proper shielding does. Thus, modifying voltage is not a strategy for reducing radiation exposure.