Which of the following best describes renewable energy resources?
A) They currently supply 20% of the Earth’s electricity.
B) They contribute only 70% as much greenhouse gases as fossil fuels do.
C) They have been largely ignored by the Obama administration.
D) They are unsuitable for the economies of developing nations.
The Correct Answer and Explanation is:
Correct Answer: A) They currently supply 20% of the Earth’s electricity.
Explanation:
Renewable energy resources are sources of energy that are naturally replenished on a human timescale. These include solar, wind, hydro (water), biomass, and geothermal energy. Unlike fossil fuels such as coal, oil, and natural gas, renewable resources do not deplete with use and are more environmentally friendly.
Option A is the correct choice because, as of recent global data, renewable energy sources provide around 20-30% of the world’s electricity, depending on the specific metrics and year considered. This figure includes energy generated from hydroelectric dams, solar panels, wind turbines, and other renewable technologies. Hydroelectric power is currently the largest contributor among renewables, followed by wind and solar power. The share of renewables in global electricity generation is steadily increasing due to international efforts to combat climate change and transition to sustainable energy systems.
Option B is incorrect because it underestimates the benefits of renewables. In reality, renewable energy sources produce little to no greenhouse gas emissions during operation, unlike fossil fuels which are the largest contributors to greenhouse gas emissions and global warming.
Option C is factually incorrect. The Obama administration actively promoted renewable energy, investing billions of dollars in clean energy technologies through initiatives such as the American Recovery and Reinvestment Act. Programs were launched to support solar, wind, and energy efficiency projects across the United States.
Option D is also false. Renewable energy is highly suitable for developing nations, especially in remote or off-grid areas. Technologies like solar and wind can be deployed without the need for extensive infrastructure and can help improve energy access, reduce dependency on imported fuels, and support economic development in a sustainable way.
In conclusion, renewable energy is an essential part of the global shift toward sustainability, and option A best reflects its current role in electricity generation.
