The correct option is Crude Birth Rate.
Explanation
Demographic indicators are statistical measures used to analyze population dynamics. The specific formula provided in the question relates to the measurement of natality relative to the total population.
Option Analysis:
- Natural Growth Rate is incorrect: The Natural Growth Rate represents the difference between the birth rate and the death rate. It indicates the pace at which a population increases or decreases due to natural causes, excluding the impact of migration.
- Crude Birth Rate is correct: The Crude Birth Rate (CBR) is defined as the number of live births occurring in a year per 1,000 of the estimated mid-year population. The formula is:
CBR = (Number of live births / Estimated mid-year population) × 1000.
It is termed "crude" because it calculates births against the total population without adjusting for age or sex structures. - Fertility Rate is incorrect: The Fertility Rate (such as the General Fertility Rate or Total Fertility Rate) measures the number of live births relative to the specific population of women of childbearing age (typically 15-49 years), rather than the total population.
- Fecundity Rate is incorrect: Fecundity refers to the physiological or biological capacity to reproduce. It describes potential rather than the actual statistical occurrence of births.
Key Takeaway: The Crude Birth Rate (CBR) uses the total mid-year population as the denominator, making it a broad indicator, whereas fertility rates provide a more refined measure by using the population of women in the reproductive age group as the denominator.