Which of the following energy-saving projects receives a high priority for implementation from authorities?

Explanation

Authorities and decision-makers prioritize energy-saving projects based on their cost-effectiveness and impact. The primary goal is to achieve the maximum return on investment (ROI) while minimizing expenses.

Cost Efficiency:

• Projects with low cost require minimal investment, making them easier to fund and implement.
• Governments and organizations have limited budgets, so they prefer projects that yield significant results without heavy financial burdens.

High Return on Investment (ROI):

• A high return means the project will result in substantial energy savings, reducing operational costs and environmental impact.
• High ROI ensures that the benefits (such as lower energy bills and reduced emissions) outweigh the investment.

Comparison with Other Options:

1. Medium cost, medium return – Less efficient than low-cost, high-return projects.
2. High cost, medium return – Not cost-effective, as investment outweighs the benefits.
3. High cost, high return – Though beneficial, the high investment requirement makes it harder to approve and fund.