The correct answer is: All of the above.
Landslides are a natural hazard in Manipur and can be exacerbated by soil erosion, deforestation, and heavy rainfall.
Soil erosion is the process of soil being moved from one place to another by the action of wind, water, or gravity. It can be caused by natural processes such as floods and storms, or by human activities such as deforestation and agriculture. Soil erosion can weaken the ground and make it more likely to slide.
Deforestation is the removal of trees from a forested area. Trees help to hold the soil in place, so when they are removed, the soil is more likely to erode. Deforestation can also lead to changes in the water cycle, which can make landslides more likely.
Heavy rainfall can cause landslides by soaking the ground and making it heavy. This can cause the ground to become unstable and slide. Heavy rainfall can also cause flooding, which can weaken the ground and make it more likely to slide.
All of these factors can contribute to landslides in Manipur. Landslides can cause significant damage to property and infrastructure, and can also result in loss of life. It is important to be aware of the risks of landslides and to take steps to mitigate them.