Concept:Production strategy in an over-populated country should use the abundant factor of production, which is labour.
Explanation:Labour intensive production means relying more on human effort than on machines and capital equipment.
It suits an over-populated country because labour is plentiful and relatively cheap.
Capital intensive production needs heavy investment in machinery, which such a country may not easily afford.
Import substitution is about reducing imports, not about choosing a production technique.
"First come first employed" is not a recognised economic production strategy.
For maximum employment and efficient use of available workers, labour intensive methods are preferred.
Answer:C. labour intensive