Key difference in heat generation and emissions

Steps:

• Oil-fired stations burn oil to heat water into steam, releasing combustion gases.
• Nuclear stations use fission to heat water into steam without burning fuel.
• Both then use steam to drive turbines connected to generators for electricity.
• The emission of gases from fuel combustion is unique to oil-fired stations.

Why A is correct:

• Oil-fired stations combust fossil fuels, producing exhaust gases like CO2 and SO2 released into the atmosphere, unlike nuclear fission which generates heat without combustion byproducts.

Why the others are wrong:

• B: Both stations produce steam in a boiler using heat from fuel combustion (oil) or fission (nuclear).
• C: Both use steam to turn turbines in identical ways.
• D: Both employ turbines to drive electric generators.

Final answer: A