What aspect of sustainable design positively affects a company's operational costs?

The selection of the choice indicating that sustainable design generally decreases both material and energy costs reflects the principles of sustainability in practice. Sustainable design often focuses on the efficient use of resources, which can lead to significant reductions in waste and lower material costs. This includes using renewable materials that are less expensive in the long run or adopting practices that minimize excess and optimize production processes.

Additionally, by implementing energy-efficient systems and practices, companies can drastically reduce their energy consumption. Over time, these changes not only reduce operational expenses but can also lead to long-term savings and improved profitability. Furthermore, as companies shift towards more sustainable practices, they may benefit from government incentives, tax breaks, and a positive public image, all of which contribute to cost savings and enhance overall operational efficiency.

In summary, effective sustainable design aligns with cost reduction strategies, making this option the most valid choice for how sustainable practices positively influence operational costs.