Key Difference: Emission of Combustion Gases

Steps:

• Identify core process: Both stations generate electricity via steam turbines, but differ in heat source.
• Compare heat production: Oil-fired burns fossil fuel for heat; nuclear uses fission without burning.
• Evaluate choices: Check which describes a unique aspect of oil-fired operation.
• Select differentiator: Focus on environmental output from fuel use.

Why A is correct:

• Oil-fired stations combust fuel, releasing greenhouse gases and pollutants directly into the atmosphere per combustion chemistry (e.g., C + O₂ → CO₂).

Why the others are wrong:

• B: Both produce steam in boilers using heat from fuel, though nuclear heat is from fission, not combustion.
• C: Steam drives turbines in both stations identically.
• D: Turbines power generators in both for electricity production.

Final answer: A