If high density and low housing availability exist together in an area what result is possible?

Correct answer: Crowding and pressure of unplanned settlements

Direct answer: Option A is correct. High density means many people occupy a limited area. If housing supply is low, there are not enough formal homes for everyone who needs one. People may then live in crowded rooms, informal settlements or unplanned extensions. This can create pressure on water, sanitation, roads, waste disposal and other services. Option A correctly describes crowding and pressure from unplanned settlements. Option B is wrong because a housing shortage does not make all houses empty; it usually increases competition for available homes. Option C is wrong because the physical area does not automatically grow when population increases. Option D is wrong because density can still be measured using population and area. The accurate chain is: high density plus insufficient housing leads to crowding and possible unplanned settlement. Remember: limited homes with many people creates housing pressure.