Question

Which one is the major reason for pollution in big cities?
(A) Fossil fuel

• A. Heat dispersion
• B. Acid rain
• C. None of the above
• D. Fossil fuel

Answer 1

The correct option is D Fossil fuel

Fossil fuel
Fossil fuels are the traces or preserved remains of dead plants and animals.
Fossil fuel is the major source of pollution in big cities due to its increased use by automobiles for transport and communication.
Their combustion leads to the release of harmful gases along with unburnt hydrocarbons that altogether lead to air pollution.

Final answer
(a) Fossil fuel