Concept:Subsistence agriculture is a farming system in which crops and animals are raised mainly to feed the farmer and the farmer's family rather than for commercial profit.
Explanation:Subsistence agriculture is commonly practised by peasant farmers who work on small plots of land with simple tools.
The labour required for farm work is usually supplied by the farmer's family members.
Because output is small and resources are limited, pests and diseases are not really controlled by the farmer.
However, subsistence agriculture does not require the services of both skilled and unskilled labour.
The work is mostly done by unskilled family labour, and modern or specialised farming skills are not needed under this system.
Therefore, the statement in option D does not describe a genuine feature of subsistence agriculture.
Answer:D. It requires the use of both skilled and unskilled labour.