If child mortality falls and birth rate remains high in an area, what will happen to population growth?

Correct answer: Growth may become rapid

The direct answer is A: growth may become rapid. Population growth is affected by births, deaths and migration. If the birth rate stays high, many children continue to be added to the population. When child mortality falls, a larger share of those children survives, so the loss caused by early deaths becomes smaller. The population can therefore increase more quickly. The word “may” is important because complete growth also depends on other death rates and migration, which are not given. A is correct because it describes the likely demographic direction without claiming certainty. B is wrong because lower child mortality does not force the population to decline. C is wrong because birth and mortality conditions do not automatically stop migration. D is wrong because density means population per unit area and cannot become zero merely because child mortality falls. Memory cue: high births plus fewer deaths usually widens natural increase.