Question
Which fossil fuel has by far the most abundant remaining reserves, but is the most polluting to use?
Group of answer choices
oil
coal
natural gas
oil sands
oil shales
Group of answer choices
oil
coal
natural gas
oil sands
oil shales
Answers
GPT-4o mini
Coal has by far the most abundant remaining reserves among fossil fuels, and it is also the most polluting to use. Therefore, the correct answer is **coal**.