Which area is most likely to have high population density?

Correct answer: City with jobs and facilities

The direct answer is A: a city with jobs and facilities. Population density means the number of people living in a unit of area, often expressed as people per square kilometre. Cities commonly offer employment, markets, schools, hospitals, transport, housing and other services, so they attract migrants and support concentrated settlement. Option A is correct because these attractions make high density more likely, although every city does not have exactly the same density. Option B is wrong because a waterless desert has severe limits on drinking water, farming and daily life, so settlement is usually sparse. Option C is wrong because permanent snow areas have extreme cold, difficult transport and very limited economic activity. Option D is wrong because inaccessible mountains often have steep slopes, poor connectivity and fewer services, which generally discourage dense settlement. The question asks which area is most likely, not which area must always be dense. Exam cue: jobs plus services plus accessibility usually point to high population density.