The correct answer is: d) Landslides.
The hilly terrain of Nagaland makes the soil prone to landslides. Landslides are a type of mass movement that occurs when a mass of soil, rock, or debris moves down a slope. They can be caused by a variety of factors, including heavy rains, earthquakes, and human activity. Landslides can cause significant damage to property and infrastructure, and can also be deadly.
Waterlogging is a condition in which the soil is saturated with water. This can occur when there is too much rain or when the soil is impermeable. Waterlogged soil can be difficult to work with, and can also lead to problems such as root rot and plant death.
Wind erosion is a process that occurs when wind blows away loose soil particles. This can be a problem in areas with dry, windy climates. Wind erosion can damage crops and other vegetation, and can also lead to the loss of topsoil.
Soil compaction is a condition that occurs when soil particles are pressed together too tightly. This can make the soil difficult to work with, and can also reduce its ability to hold water and nutrients. Soil compaction can be caused by heavy machinery, livestock, and human activity.