Which of the following describes a downside of using oil as an energy source?

• A. Environmental spills, smog produced, global warming as a result of burning fuels, acid rain, non-biodegradable
• B. Renewable energy source with low emissions
• C. Abundant and inexpensive
• D. No pollution

Answer: (A)

Oil as an energy source has several environmental downsides. When it is burned, it releases carbon dioxide, a greenhouse gas that contributes to global warming. It also emits pollutants like nitrogen oxides and sulfur oxides, which can produce smog and acid rain, harming air quality, plants, and aquatic systems. Additionally, oil spills during extraction, transport, or use can cause immediate and long-lasting damage to ecosystems, and many hydrocarbon components persist in the environment rather than biodegrading quickly. This combination of air pollution, climate impact, and ecological damage shows why that description is the best match for the downsides of using oil. The other statements describe advantages—like being renewable with low emissions, being abundant and inexpensive, or causing no pollution—that do not align with the real drawbacks of oil.