The correct option is 2 and 3 only.
Explanation
Intensive subsistence agriculture is a type of farming practiced in densely populated regions, particularly in Monsoon Asia. It involves the maximum utilization of available land to sustain a large population, relying heavily on manual labor rather than capital investment.
- Statement 1 is Incorrect: This form of agriculture is characterized by very small and fragmented landholdings due to high population pressure and inheritance laws. It is labor-intensive, involving family labor for most operations. The use of machinery and extensive mechanization is limited, unlike in extensive commercial grain farming where landholdings are large and highly mechanized.
- Statement 2 is Correct: As the term "subsistence" implies, the production is oriented mainly towards self-consumption to meet the food requirements of the farmer and their family. While some surplus may be sold in local markets, the primary goal is not commercial trade.
- Statement 3 is Correct: This agricultural system is prevalent in the densely populated regions of South, Southeast, and East Asia. The intensive use of land, often through double or multiple cropping and heavy use of manure/fertilizers, allows the land to support a very high density of population.
Key Takeaway: Intensive subsistence agriculture is defined by high labor input, small landholdings, and high yield per unit of land (though low yield per labor), primarily to support high population densities in developing regions.