Japan because it haven't experienced before
Answer:
Rainwater harvesting and recycled wastewater also allow to reduce scarcity and ease pressures on groundwater and other natural water bodies. Groundwater recharge, that allows water moving from surface water to groundwater, is a well-known process to prevent water scarcity.
Explanation:
Speaking from experience, the answer is not D.
This question. Is making a question out of a sentence. Here is a graph of the global temps over the millennia.