Concept:Local government revenue expands best when the council organizes income-generating activities inside its own locality.
Explanation:Cottage industries are small businesses such as soap making, weaving, or food processing that operate from homes or small shops.
They give local governments a dependable source of revenue through taxes, levies, license fees, and market charges.
As these industries grow, they create jobs, raise household incomes, and widen the taxable base of the community.
Schools and housing units are social amenities that spend government money rather than raise it.
Import duties belong to the central government, so local councils cannot collect them.
Thus, promoting cottage industries directly strengthens the financial base of a local government.
Answer:D. Cottage industries