Correct Answer: Environmental sustainability

Solution : The correct answer is (C) environmental sustainability.

Non-commercial energy sources, such as renewable energy sources, are primarily focused on minimizing the negative environmental impact associated with energy production and consumption. These sources aim to reduce greenhouse gas emissions, air pollution, and reliance on finite fossil fuel resources. By utilizing renewable sources like solar, wind, hydro, biomass, and geothermal energy, non-commercial energy sources promote sustainable and clean energy generation. While factors like low cost and availability are beneficial aspects of non-commercial energy sources, their overarching goal is to contribute to long-term environmental sustainability and mitigate the negative effects of conventional energy production.