A researcher is studying a population with a unique age structure. Over the course of several decades, the histogram that depicts this structure first appears as a pyramid, becomes roughly rectangular in shape, and finally appears as an inverted pyramid (where the base is narrower than the top) . How has this population changed over time?
A) The population first grows, stabilizes, and then declines.
B) The population is first stable, increases, and then declines.
C) The population at first declines, stabilizes, and then increases.
D) The population increases and then rapidly declines.
Correct Answer:
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