The correct answer is: a) Some tribes in Arunachal Pradesh.
Jhum cultivation, also known as shifting cultivation or slash-and-burn agriculture, 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 moving on to another plot. This practice is common in many parts of the world, including Asia, Africa, and South America.
In Arunachal Pradesh, jhum cultivation is practiced by some of the tribal communities. The practice is particularly common in the eastern and southern parts of the state. Jhum cultivation is a sustainable agricultural practice when it is done in a way that allows the land to regenerate. However, when it is done unsustainably, it can lead to deforestation, soil erosion, and loss of biodiversity.
The other options are incorrect because:
- Option b) is incorrect because not all tribes in Arunachal Pradesh practice jhum cultivation.
- Option c) is incorrect because jhum cultivation is not only practiced by tribes living in high altitude areas. It is also practiced by tribes living in other parts of the state.
- Option d) is incorrect because jhum cultivation is not practiced by coastal tribes of Arunachal Pradesh.