Population Dynamics Practice Test

Country A has a total fertility rate (TFR) of 4.2, while Country B has a TFR of 1.6. A secondary source notes that TFR estimates the average number of children a woman would have over her lifetime given current age-specific fertility rates, and that replacement-level fertility is roughly 2.1 in many populations. Assuming no major changes in mortality, which statement best compares likely long-term population trends in Country A and Country B?

Secondary-source excerpt (population dynamics): A comparative study describes two countries. Country J has CBR 38 per 1,000 and CDR 14 per 1,000; Country K has CBR 11 per 1,000 and CDR 12 per 1,000. The author argues that these rates imply different development contexts and different directions of natural increase. Which statement correctly compares the natural increase implied by these rates?