Which of the following is a characteristic of fossil fuels?

The correct answer emphasizes the characteristics of fossil fuels and acknowledges two distinct but related aspects. Fossil fuels, such as coal, oil, and natural gas, are primarily formed from the remains of organic matter, like plants and animals, that have decomposed over millions of years under specific geological conditions. This formation process is what gives rise to the energy-releasing properties of fossil fuels.

Additionally, when fossil fuels are burned for energy, they release carbon dioxide and other greenhouse gases into the atmosphere. This contributes to climate change, making these fuels significant in discussions about environmental impact and sustainability.

While it is important to note that fossil fuels are not renewable sources of energy, as their formation takes millions of years, the recognition that they are formed from organic remains and contribute to greenhouse gas emissions positions options B and C as crucial characteristics of fossil fuels. Thus, both statements are essential to understanding their impact and role in energy production.