If an area has a very low birth rate and high emigration, what can be a long-term concern?

Correct answer: Population decline and reduction of the labour force

The direct answer is A: population decline and reduction of the labour force. Population changes through births, deaths and migration. A very low birth rate adds fewer young people, while high emigration removes residents, often including working-age adults. If these patterns continue and are not offset by immigration or other changes, the total population may shrink. The working population may decline even earlier, reducing the number of people available for jobs and for supporting public services. Option B is the opposite of the likely concern and would require strong population increase. Option C cannot be concluded because the question describes emigration, not immigration. Option D is unrelated and cannot follow from low births or outward migration. Memory cue: low births reduce future entrants; emigration removes current residents.