What distinguishes renewable energy sources from non-renewable sources?

The distinction lies in the ability of renewable energy sources to naturally replenish themselves over time, unlike non-renewable sources which are limited in availability and can be depleted. Renewable sources, such as wind, solar, and hydroelectric power, harness energy from natural processes that are constantly occurring, meaning they can consistently provide energy without the risk of running out. In contrast, non-renewable sources, such as coal, oil, and natural gas, are formed through geological processes over millions of years and are consumed faster than new supplies can be formed, making them finite.

The other options do not accurately capture the essence of the distinction. For example, while there may be instances where renewable sources can be more expensive in specific contexts, this is not a fundamental characteristic that differentiates them from non-renewable sources. Additionally, not all renewable energy comes solely from solar energy; it also includes wind, geothermal, and biomass, which further illustrates the breadth of the category. Lastly, the efficiency of energy sources can vary widely depending on many factors such as technology and application, so claiming that non-renewable sources are always more efficient is not a comprehensive or accurate statement. Thus, the clarity of option B in highlighting the replenishability of renewable sources accurately defines