Shifting cultivation, also known as ‘jhum’, is a traditional agricultural practice in which farmers clear a piece of land by cutting and burning the vegetation, then plant crops on the land for a few years before abandoning it and moving on to a new plot. This type of cultivation is often practiced in hilly areas, where the land is not suitable for permanent agriculture.
The Imphal Valley is a lowland area in the center of Manipur, India. It is the most densely populated part of the state and is home to the capital city of Imphal. The Imphal Valley is not suitable for shifting cultivation, as the land is too flat and the soil is not fertile enough.
Coastal areas are also not suitable for shifting cultivation, as the land is often saline and the soil is not fertile enough.
Urban centers are also not suitable for shifting cultivation, as the land is often too valuable for agricultural use.
Therefore, the correct answer is: Hilly regions of Manipur.