Question

when constructing roadways or buildings adjacent to groundwater sources, what should engineers consider to ensure that aquifers have adequate recharge areas? paving over natural recharge zones to prevent contamination maintaining porous surfaces and protecting possible contamination zones increase depth of groundwater sources to store more water diverting alternative water sources directly into sewers to reduce flooding

Explanation:

Paving over natural recharge zones would hinder recharge, increasing the depth of groundwater sources doesn't directly relate to recharge areas, and diverting alternative water sources to sewers is not related to aquifer recharge. Maintaining porous surfaces allows water to infiltrate and protecting possible contamination zones safeguards the quality of water entering the aquifer, which is important for recharge.

Answer:

maintaining porous surfaces and protecting possible contamination zones