Important “great divide year” after which the added population exceeds that of previous decade:
**Core Concept**
The "great divide year" in demography refers to the point at which the added population in a decade exceeds that of the previous decade. This concept is crucial in understanding population growth and its implications on healthcare, economy, and infrastructure.
**Why the Correct Answer is Right**
The correct answer marks the beginning of a significant acceleration in population growth. Demographers use this metric to assess the rapidity of population expansion and its effects on resource allocation and societal development. The added population in this year exceeds that of the previous decade due to a combination of factors such as improved healthcare, increased life expectancy, and declining mortality rates.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not represent a significant turning point in population growth. The added population in this decade is comparable to or slightly higher than that of the previous decade, but it does not signify a notable acceleration.
**Option B:** This option is incorrect because it is too early to mark a significant divide in population growth. The added population in this decade is still within the range of the previous decade, indicating a more gradual increase.
**Option C:** This option is incorrect because it represents a period of population decline or stabilization, rather than growth.
**Clinical Pearl / High-Yield Fact**
A key takeaway from this concept is that the "great divide year" has significant implications for healthcare planning, resource allocation, and infrastructure development. It is essential for policymakers and healthcare professionals to understand this metric to make informed decisions about resource allocation and service delivery.
**Correct Answer: C.**