Concept:Domestic waste comes from normal household activities.
Explanation:Domestic waste mainly includes sewage, kitchen refuse, and household rubbish from homes.
Sewage from residential areas is a typical example of domestic waste.
Fertilizers and insecticides are agricultural or chemical substances, not normal household waste.
Crude oil is an industrial raw material and not produced by homes.
Sulphur dioxide is an air pollutant released by burning fuels or factories, not domestic waste.
Therefore, only item III (Sewage) qualifies as domestic waste.
Answer:B. III only