Which of the following practices is commonly used in pollution prevention strategies?

The practice of operating cost reduction is commonly recognized as a key component of pollution prevention strategies. By focusing on reducing operating costs, organizations can effectively minimize waste and inefficiencies in their processes. This is achieved through various means, such as optimizing resource use, improving energy efficiency, and implementing cleaner production techniques. By streamlining operations and reducing the amount of raw materials and energy consumed, companies not only lower their costs but also significantly decrease their environmental impact.

In contrast, increased energy consumption, expansion of waste facilities, and higher material purchases do not align with the principles of pollution prevention. Increased energy consumption tends to contribute to a larger environmental footprint, while expanding waste facilities does not prevent pollution but rather manages its aftermath. Higher material purchases can lead to more waste generation and resource depletion, contradicting the goal of reducing overall pollution and improving sustainability.