What is the major cause of sedimentation? mining and drilling

forestry and farming

canals and irrigation

road building and home construction

Forestry and farming

Explanation:

Forests increase soil stability because their roots bind the soil together. When large areas of land are cleared and harvested of trees, the soil becomes vulnerable to erosion as tree roots die and as the land is exposed to direct rainfall. Trees increase the soil's ability to take up water, and as a result there is usually a significant increase in the amount of surface water runoff from the surrounding catchment when trees are felled.