Primitive subsistence agriculture is not known by which name _______?

None of the above

The correct answer is option 4: None of the above

Primitive subsistence agriculture is also known as shifting cultivation because the tribes keep shifting to new patches of land. The vegetation is usually cleared by fire, and the ashes add to the fertility of the soil. Shifting cultivation is thus, also called slash and burn agriculture. It is known as jhum cultivation in north-eastern India.