I'm pretty sure its C. sonar.
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:
C. Clay soil has a higher porosity than sandy soil.
Explanation:
Maller soil particles have smaller pore spaces, but a greater number of them, which leads to higher surface tension and high % porosity.