Answer:
O planting a tree belt
Step-by-step explanation:
A tree belt consists of a line where several trees are planted in a row, forming something like a fence. Like the fence, the plant belt aims to promote protection for an area that, for some reason, is fragile, like a dry and desertified land.
The best way to protect dry and desertified regions is with a vegetation cover, which can be done through the belt of trees. This vegetation cover will promote less impact on the region's soil, improve soil quality and prevent erosion, allowing the region to powerfully improve its geographic and environmental conditions.