If people come from outside and settle in an area what effect may occur on its population?

Correct answer: Population may increase

Direct answer: A, the population may increase. When people come from another place and settle in an area, they are added to that area’s resident population. This movement is inward migration or in-migration. The word “may” is important because the final population also depends on people leaving, births, and deaths. If arrivals are greater than departures and other decreases, the population rises. Option A is correct because it states the likely effect without claiming that it must happen in every circumstance. Option B is wrong because the arrival of people does not always decrease population; it generally adds residents. Option C is wrong because migration changes the number of people, not the physical area of land. Option D is wrong because migration cannot make the death rate automatically zero; death rate depends on several demographic and social conditions. Memory cue: people entering an area are added to its population.