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If an area has high density and poor drainage, which urban risk can increase?

Answer and explanation

Correct answer: Waterlogging and health problems

Answer: A, waterlogging and health problems. High population density means many people live in a relatively small area. If drains are inadequate, blocked, or unable to carry rainwater and wastewater away, water can collect on streets and near houses. This is called waterlogging. Standing or polluted water can disrupt travel, damage property, contaminate surroundings, and increase the risk of sanitation and health problems. The exact effect depends on rainfall, drainage design, maintenance, waste management, and local conditions, but the risk is clearly possible. Option A is correct because it connects dense settlement with inadequate drainage. B is wrong because drainage conditions cannot increase the physical height of a mountain. C is wrong because poor drainage does not automatically enlarge the area. D is wrong because waterlogging does not make the population zero. Memory cue: many people plus poor water outflow means more exposure to flooding and sanitation problems.

Related tags

Population DensityDrainageWaterloggingUrban HealthPopulationGeographyClass 9 Mcq

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