What can an area with high population be called?

Correct answer: Densely populated area

The direct answer is B: densely populated area. Population density describes how many people live in a unit of land area. If many people live in a relatively small or stated area, the area is called densely populated. The reasoning is: observe a high number of people → compare it with the available area → classify the place as dense or high-density. Option A, sparse area, means few people are spread over a large area, so it is the opposite. Option B is correct because it directly means an area with a high concentration of people. Option C, uninhabited area, means no people live there, so it cannot describe a high-population place. Option D, empty plateau, describes neither population concentration nor a general population term; a plateau may be densely or sparsely populated depending on conditions. Do not confuse population size with density: a large total population can occupy a very large area, while density depends on people in relation to area. Memory cue: many people in limited space means dense.