Why is population density useful in planning?

It shows where pressure on facilities may be higher

Population density means the number of people living in a unit of area, such as one square kilometre. It helps planners understand where many people live close together and where the demand for schools, hospitals, water, transport, housing, and other public services may be greater. Density does not itself create facilities, change mountains, name rivers, or stop weather. Its value is that it provides useful information for deciding where facilities and resources may be needed most.

To solve this question, connect the meaning of density with practical planning. A densely populated area may place heavier pressure on roads, classrooms, health centres, water supply, sanitation, and housing. A sparsely populated area may require a different arrangement of services because people are more spread out. Therefore, option A is correct: density shows where pressure on facilities may be higher. The other choices describe unrelated or impossible effects.

This is a Class 9 Geography question. Chapter: Population. Topic: Population Density.