The correct option is Hoe and dao.
Explanation
Primitive subsistence farming is a traditional form of agriculture practiced on small patches of land. It relies heavily on the monsoon, the natural fertility of the soil, and the suitability of other environmental conditions to the crops grown. This system is characterized by the use of indigenous tools and family or community labour.
Detailed Analysis:
- Hoe and dao is Correct: Tools such as the hoe, dao, and digging sticks are typically associated with primitive subsistence farming (often referred to as 'slash and burn' agriculture or Jhumming in India). These are manual, low-technology implements used to clear vegetation and turn the soil without the need for draught animals or machinery.
- Options Tractor-mounted seed drill, Combine harvester, and Rotary tiller are Incorrect: Tractor-mounted seed drills, combine harvesters, and rotary tillers are advanced, mechanized tools. They are characteristic of commercial farming or capital-intensive agriculture, where the objective is high productivity and efficiency on larger landholdings.
Key Takeaway:
Primitive subsistence farming is distinguished by the use of simple, manual tools like the hoe and dao, whereas modern farming systems utilize heavy mechanization.