What measures are taken in flood control to manage flooding risks?

The focus of flood control is primarily on managing and mitigating flooding risks that arise from excess water, making the chosen answer the most comprehensive and accurate. This encompasses a range of strategies aimed at reducing the impact of flooding events on communities, ecosystems, and infrastructure. Effective flood management includes techniques such as creating floodplain zoning, implementing early warning systems, enhancing drainage systems, and fostering public awareness about flood risks.

While the construction of reservoirs plays a role in managing water resources and could contribute to flood control by storing excess water, it is just one aspect of a broader flood management strategy. Regulation of groundwater extraction and reduction of irrigation practices, while relevant to overall water management, do not directly focus on mitigating flood risks specifically. Instead, they address issues related to water supply and conservation but do not encompass the proactive measures taken during flood events or the management of excess water situations.

Thus, the correct choice accurately reflects the multifaceted approach necessary for effective flood risk management.