What is a green alternative for producing large amounts of electrical energy?

• A. Natural gas turbines
• B. Coal-fired plants
• C. Diesel generators
• D. Photovoltaic cells

Answer: (D)

The main idea is choosing an energy source for large-scale electricity that minimizes environmental impact by reducing emissions during operation. Photovoltaic cells convert sunlight directly into electricity, so they generate power without burning fuels and without emitting greenhouse gases or other pollutants while they run. That makes them the green option for supplying large amounts of energy, especially when built as solar farms or integrated into grids with storage or smart management to handle variability.

Natural gas turbines do produce electricity with lower emissions than coal, but they still burn fossil fuels and release CO2 and other pollutants. Coal-fired plants release large amounts of CO2 and air pollutants. Diesel generators burn diesel and are typically used for backup or small-scale needs, with high emissions and poor scalability for large, steady power.