The correct answer is: a) Hill districts of Manipur.
Traditional shifting cultivation, also known as jhum cultivation, is a form of agriculture that involves clearing a piece of land by cutting and burning the vegetation, then planting crops on the cleared land for a few years before abandoning it and moving on to a new plot. This type of cultivation is often practiced in mountainous areas, where there is a lot of available land but the soil is not very fertile.
Jhum cultivation is a sustainable form of agriculture if it is practiced in a way that allows the land to recover between uses. However, if it is practiced too frequently or without proper management, it can lead to deforestation, soil erosion, and loss of biodiversity.
The other options are incorrect because:
- b) Imphal Valley is a lowland area in the center of Manipur. It is not suitable for jhum cultivation because the soil is too fertile and the land is too densely populated.
- c) River plains are also not suitable for jhum cultivation because the soil is too fertile and the land is too densely populated.
- d) Coastal regions are not suitable for jhum cultivation because the soil is too saline and the land is too densely populated.