Which of the following is also known as ‘slash and burn’ agriculture?

The correct answer is Option (4) → Primitive subsistence agriculture

Primitive subsistence agriculture is farming on small patches of land with simple tools such as the hoe, the dao and digging sticks, mainly to feed the farmer’s own family. Its common form is shifting cultivation, which is why it is called ‘slash and burn’ agriculture: a patch of forest is cut down and burnt, crops are grown on it for a few years, and when the soil loses its fertility the farmers move on and clear a new patch.

In India it is known by different names, such as jhumming in the north-eastern states.