The correct answer is: All of the above.
Manipur is a state in northeastern India with a hilly terrain. The state is prone to soil erosion, which is the process of soil being carried away by wind or water. Soil erosion can lead to a loss of agricultural land, as well as a decline in the quality of the soil. Soil conservation measures like terracing and contour farming are important in Manipur to help prevent soil erosion and protect agricultural land.
Terracing is a method of farming that involves creating a series of steps on a hillside. This helps to slow down the flow of water and prevent soil from being washed away. Contour farming is a method of farming that involves planting crops in rows that follow the contours of the land. This helps to prevent soil from being eroded by wind.
Both terracing and contour farming are important soil conservation measures that can help to protect agricultural land in Manipur.