Question

fossil fuels account for approximately what percent of energy used in the united states? 15 80 5 100

Explanation:

To determine the percentage of energy from fossil fuels in the US, we refer to energy statistics. Fossil fuels (coal, oil, natural gas) make up about 80% of US energy consumption. The options 15, 5, and 100 are inconsistent with known data (100% is impossible as other energy sources exist, 15 and 5 are too low).

Answer:

80 (The option with the value 80, representing that fossil fuels account for approximately 80% of energy used in the United States)