True about ‘total fertility rate’ is
**Core Concept**
The total fertility rate (TFR) is a measure of the average number of children a woman would have in her lifetime based on the current age-specific fertility rates of a population. It is a key indicator of a country's reproductive health and fertility trends.
**Why the Correct Answer is Right**
The TFR takes into account the age-specific fertility rates of women in a population, which means it considers the number of births per 1,000 women in different age groups. This allows for a more accurate representation of a population's fertility trends, as it accounts for the varying reproductive capacities of women across different age ranges. The TFR is often used as an indicator of a country's fertility trends and is used to compare the fertility rates of different populations.
**Why Each Wrong Option is Incorrect**
**Option A:** This option may be incorrect if it suggests that TFR only accounts for the number of births in a specific age group, rather than considering the age-specific fertility rates of women across different age ranges.
**Option B:** This option may be incorrect if it implies that TFR measures the number of births per 1,000 women in a specific year, rather than considering the average number of children a woman would have in her lifetime.
**Option C:** This option may be incorrect if it suggests that TFR is only relevant for developed countries, rather than being a useful indicator of fertility trends for populations around the world.
**Clinical Pearl / High-Yield Fact**
The TFR is an important indicator of a country's reproductive health and fertility trends, and it can be used to track changes in fertility rates over time. A TFR of 2.1 is often considered the replacement rate, as it is the average number of children a woman would need to have in order to replace herself and her partner in the population.
**Correct Answer: C.**