If both births and in-migration increase in an area, what can happen?

Correct answer: Population may increase

Direct answer: A, the population may increase. Work through the two effects separately. First, each birth adds a new member to the area’s population. Second, each person who comes through in-migration becomes an additional resident of that area. When both adding processes increase, they create upward pressure on the population total. The word “may” is important because deaths and out-migration could also occur at the same time; if those reductions were larger, the final population might not rise. B is wrong because the two processes named in the question add people, not remove them, although other processes could change the final result. C is wrong because neither births nor in-migration automatically means that only the death rate increases. D is unrelated: population processes do not make the geographical area disappear. Memory cue: add births and arrivals; subtract deaths and departures.