Question

the burning of fossil fuels releases ______ into the atmosphere.
choose one option
a sulfuric acid
b methane
c sodium chloride
d carbon dioxide

Explanation:

Fossil fuels (like coal, oil, gas) are carbon - based. When burned, the carbon in them combines with oxygen to form carbon dioxide ($\ce{CO_2}$). Sulfuric acid is a result of sulfur oxides reacting with water in the atmosphere, not a direct product of fossil fuel burning. Methane is a greenhouse gas but not the main direct product of fossil fuel combustion. Sodium chloride (table salt) has no relation to fossil fuel burning. So the correct option is D.

Answer:

D. carbon dioxide