Key solution of urban flooding is a:

The correct answer is Urban drainage Reservoir. The key solution to urban flooding is the construction and maintenance of urban drainage reservoirs. Urban flooding occurs when excessive rainfall overwhelms the drainage system, leading to water accumulation. Drainage reservoirs help manage stormwater runoff by temporarily storing excess water and releasing it gradually into natural water bodies. Deforestation, reservoir holes, and cutting roads are not solutions to urban flooding; they often exacerbate the problem. Therefore, urban drainage reservoirs are the correct solution.