Constructed wetlands are primarily used for which of the following purposes?

Constructed wetlands are engineered systems designed to utilize natural processes involving wetland vegetation, soils, and associated microbial assemblages to improve water quality. Choosing the option that indicates they are used for treating wastewater from various sources accurately reflects the versatile functionality of constructed wetlands.

These systems can effectively treat a wide range of wastewater types, including agricultural runoff, municipal wastewater, and even certain types of industrial effluents. The ability to adapt to different sources of wastewater makes them a valuable tool in diverse contexts, promoting sustainability and environmental remediation.

The other options provided do not embrace the broad applicability of constructed wetlands. For instance, focusing solely on industrial applications or urban wastewater treatment limits their recognized benefits and flexibility. Similarly, while constructed wetlands can help manage stormwater, their primary design is not specifically aimed at storm surge management, but rather at wastewater treatment and improving water quality from various origins.