What is the basis for linking increase in atmospheric carbon dioxide with industrialisation?

Correct answer: Burning fossil fuels increases carbon dioxide emissions

Answer: A. Industrialisation generally increases the use of coal, petroleum and natural gas. These fossil fuels contain carbon that was stored over geological time. When they burn, the carbon combines mainly with oxygen and produces carbon dioxide, which is released into the atmosphere. Cement manufacture and some other industrial processes can also emit carbon dioxide. A is correct because it states the direct causal link between fossil-fuel combustion and rising emissions. B is wrong because industrialisation does not end the gravitational interaction that produces tides. C is wrong because factories do not only produce oxygen; many industrial activities consume fuel and emit gases. D is wrong because ozone is not food and factories do not make ozone into food. A useful learning chain is: industrial activity → fossil-fuel use → combustion → carbon dioxide emissions. The amount added to the atmosphere also depends on natural absorption by oceans and vegetation, but those sinks do not remove the basic connection between fossil-fuel burning and emissions.