Answer:
Yes! The correct answer is smog production
Step-by-step explanation:
Actually, Smog refers to heavily stagnant air formed by the mixture of nitrogen oxides with hydrocarbons released to the atmosphere from the exhaust of automobiles.
Thus, smog production is ABSOLUTELY A NON-ORGANIC process i.e it does not involve any activity of living organisms like microorganisms. So, all the processes mentioned above involved microorganisms EXCEPT SMOG PRODUCTION