If a metropolis has very high density but strong public transport, what is the balanced planning conclusion?

Correct answer: Density is high but transport capacity can reduce pressure

Direct answer: Option D. A high population density means many people live in a small area, but density alone does not tell us whether planning is successful or whether the area is unlivable. We must also examine infrastructure and service capacity. Strong public transport can move many people efficiently, reduce dependence on private vehicles and connect homes with jobs and services. It may therefore reduce some effects of crowding, although it does not remove every challenge. Option A is wrong because density remains a useful measure even when transport is good. Option B is too absolute: high density does not automatically make a place unlivable. Option C is harmful and illogical because services are needed even more where many people live. The balanced lesson is to read a density figure together with transport, housing, water, sanitation and other facilities.