The correct answer is: B) Wetland farming
Kuttanad is a region in Kerala, India, that is known for its unique form of rice cultivation. The region is located in a low-lying area that is prone to flooding. The farmers in Kuttanad have developed a unique system of rice cultivation that allows them to grow rice in this challenging environment.
The system of rice cultivation in Kuttanad is known as wetland farming. Wetland farming is a type of agriculture that is practiced in areas that are flooded or have a high water table. The farmers in Kuttanad use a system of canals and ditches to flood their fields. The water helps to keep the soil moist and provides the rice plants with the nutrients they need to grow.
Wetland farming is a sustainable form of agriculture. The system of canals and ditches helps to prevent soil erosion and water pollution. The rice plants that are grown in Kuttanad are also a good source of food and income for the farmers.
The other options are incorrect because they are not types of rice cultivation that are practiced in Kuttanad. Terrace farming is a type of agriculture that is practiced in mountainous areas. Rainfed farming is a type of agriculture that is practiced in areas that do not receive regular rainfall. Agroforestry is a type of agriculture that combines the cultivation of trees and crops.