The efficiency of pollution control can be greatly enhanced through which of the following methods?

The efficiency of pollution control can significantly improve through changing the process. This approach involves modifying equipment, technologies, or operational practices to minimize the generation of pollutants at the source. By adopting cleaner production techniques or alternative materials, the overall environmental impact can be reduced before it even reaches the pollution control stage. This method not only enhances the effectiveness of pollution control measures but can often lead to cost savings and greater sustainability in the long term.

Other methods such as higher dispersion and regular maintenance can contribute to pollution control but are typically not as impactful as changing the process itself. Higher dispersion might distribute pollutants over a larger area, which does not truly eliminate the contaminants, and while regular maintenance of equipment ensures that existing pollution control systems operate efficiently, it does not address the root cause of pollution generation. Using more pollutants would obviously be counterproductive, as it would exacerbate the pollution issue rather than mitigate it, making changing the process the most effective strategy among the options provided.