The correct answer is B. Deforestation.
Deforestation is the permanent removal of trees to make room for something besides forest. This can include clearing the land for agriculture or grazing, or using the timber for fuel, construction or manufacturing.
Afforestation is the process of converting non-forested land into forested land. This can be done by planting trees, or by allowing natural regeneration to occur.
Non-forestation is the absence of any tree cover on an area of land. This can be due to natural causes, such as a fire or a landslide, or it can be caused by human activities, such as deforestation.
Bio forestation is a type of afforestation that uses native plant species to restore an area of land that has been deforested. This can help to improve the biodiversity of the area, and it can also help to protect the soil and water resources.
Deforestation is a major environmental problem that is causing a number of negative effects, including climate change, loss of biodiversity, and soil erosion. It is important to take steps to reduce deforestation and to promote afforestation and bio forestation.