The correct answer to the question is option 4, shifting cultivation. Slash and Burn agriculture is a practice where vegetation is cut down and burned before the land is cultivated. This method is commonly used in areas with nutrient-poor soils, as burning the vegetation releases nutrients into the soil. After the land is cleared, crops are planted and grown for a few years until the soil becomes depleted of nutrients. At this point, the land is abandoned and left fallow, allowing the vegetation to regrow and restore the nutrients. Shifting cultivation is a sustainable farming practice that has been used by indigenous communities for centuries. It is a method of farming suitable for areas that have limited resources and cannot support continuous farming.