Final answer:
The correct option is 'd. More than 75%,' as approximately 80% of the world's energy supply comes from fossil fuels such as oil, coal, and natural gas, with renewables contributing a smaller portion of the overall energy mix.
Correct option is D
Step-by-step explanation:
When looking at the percentage of the world's energy provided by different types of power generation supply, we can see that none of the options (< 25%, 25-50%, 50-75%, or > 75%) directly match the data provided. However, we know that fossil fuels, which include oil, coal, and natural gas, are the dominant sources of energy, contributing to about 80% of the world's energy consumption. With oil alone accounting for about 31-35% of the global energy supply, when combined with other fossil fuels, the correct category exceeds 75%.
Juxtaposed to fossil fuels, renewable energy sources such as wind and solar power make up a smaller portion of the world's energy supply - less than 2.5% for wind and less than 1% for solar in the U.S., for example. Globally, renewable energy sources (including hydroelectric, wind, solar and geothermal) contribute a smaller yet growing percentage of energy. While each country's energy mix can vary significantly, it is clear that fossil fuels are still the main source of energy on a global scale.