Fossil Fuel Combustion Releases CO2

Steps:

• Identify the fuel source for each power station type.
• Recall that carbon dioxide is produced by burning carbon-based fuels.
• Check which option uses fossil fuels during operation.
• Eliminate renewable and non-combustion sources.

Why A is correct:

• Gas-fired stations burn natural gas (a fossil fuel), releasing CO2 as a byproduct of combustion per the chemical reaction CH4 + 2O2 → CO2 + 2H2O.

Why the others are wrong:

• B: Geothermal uses Earth's heat, no fuel combustion involved.
• C: Nuclear generates power via fission, producing no CO2 during operation.
• D: Wind harnesses kinetic energy from air, with no emissions.

Final answer: A