Why can a city's population increase when job opportunities rise?

Correct answer: People may come for work

Direct answer: A, people may move to a city to obtain work. This movement is migration, specifically an inflow when people enter the city from villages, towns, or other regions. Better employment opportunities can act as a pull factor because people seek income, livelihoods, and improved economic prospects. Option A is correct because incoming workers add to the city’s population. Option B is wrong because a drying river is not the reason given and does not explain employment-based population increase. Option C is wrong because more jobs do not necessarily raise the death rate; the statement is both unrelated and too absolute. Option D is wrong because migration for work does not immediately stop births. A city’s population can change through births, deaths, and migration, and this question focuses on migration. Memory cue: jobs attract people; people entering an area are in-migrants, so the receiving city grows.