If many workers move out but their families remain in the area, how will local growth analysis become complex?

Correct answer: Population number, age structure and economic effect must be examined separately

Direct answer: C. Out-migration of workers does not produce only one simple result. First, the number of people physically present in the area may fall, but the families who remain still count in the local population. Second, the age and sex composition may change because working-age adults are absent while children or older family members remain. Third, the local economy may be affected through labour shortages, remittances, household income and demand for services. A is wrong because migration clearly affects population structure and economic life. B is wrong because births do not automatically become zero when workers leave. D is wrong because migration changes the population, not the geographical area. The useful method is to study population size, composition and economic consequences separately before forming an overall conclusion.