Why cannot urban flood be called only a result of heavy rainfall in geography?

Correct answer: Because drainage land use solid waste and administration are also connected

The direct answer is B: drainage, land use, solid waste and administration are also connected with urban flooding. Heavy rain is often the immediate trigger, but the severity of flooding depends on how a city is planned and managed. Step by step: rain falls; roads and concrete prevent water from soaking into the ground; blocked or undersized drains slow the flow; construction on wetlands or floodplains removes natural storage; solid waste can clog drains; and weak administration may delay maintenance, warnings and emergency action. Option B is correct because it includes these human and physical factors. Option A is wrong because rainfall clearly does affect flood risk; the point is that it is not the only factor. Option C is wrong because floods occur in cities as well as villages. Option D is wrong because many cities have rivers, streams, canals or coastal water bodies, and a city can flood even without a large river. The key geographical idea is interaction between natural processes and human land use. Memory cue: urban flood = rainfall plus runoff, drainage, land use, waste and governance.