Correct option is (a) Aerobic composting
The explanation is: Microbes usually catalyze the oxidation of unsaturated carbon double bonds that forms epoxide and the process is called as epoxidation. Aerobic composting is usually used to treat the solid wastes which are generally dry in nature and not moist or wet wastes, whereas, anaerobic composting is used to degrade moist solid wastes which are very easy to degrade, and anaerobic digestion and anaerobic composting is the same thing.