If people come to a city from outside for work, what effect can it have on its population?

Correct answer: The population may increase

The correct answer is A: the population may increase. People who move into a city from another place are in-migrants, and their arrival adds residents to the city. Employment opportunities are one possible reason for such movement. If the number of people arriving is greater than the number leaving or dying, the city’s population will rise. Option A is correct because work-related in-migration can add people, although the word “may” allows for other factors that are not given. Option B is wrong because receiving workers does not mean the population must decrease. Option C is wrong because migration for work cannot automatically reduce a city’s population to zero. Option D is wrong because a change in population does not automatically change the physical area of the city. It may affect crowding or density, but area is a separate measurement. Memory cue: people entering add to population; people leaving subtract from it. Always consider both movements before making a definite statement.