Question

What is the net-reproduction rate?
A. Number of deaths of children below one year of age per 1000 live births
B. Birth rate minus death rate
C. Average Age to which a person at the time of their birth is expected to live
D. The average age of the number of daughters that would be born to a female throughout her lifetime.

Answer 1

Hint: The study of the human population through statistical data is called demographics. It helps analyse society through education, nationality, ethnicity, religion, etc and the relationships between economic, social, cultural, and biological processes influencing a population. A direct method of demography would include registering all births, deaths and legal statuses like marriages and migration. Censuses that occur about every 10 years is the most common method of collecting data for demography.

Complete answer:
Option A: is incorrect. The number of deaths of children below one year per 1000 live births is called infant mortality rate. The number of deaths of children below five years per 1000 live births is called child mortality rate.
Option B: is incorrect. The crude birth rate minus the crude death rate is called the rate of natural population increase.
Option C: is incorrect. The average age to which a person at the time of their birth is expected to live is called life expectancy at birth. It can also be specified on other factors like gender.
Option D: is correct. The average age of the number of daughters that would be born to a female through her life is called net reproduction rate. The net reproduction rate is similar to gross reproduction rate except it takes into account that all females may not be able to survive throughout their childbearing years.
Hence, the correct answer is, ‘D. The average age of the number of daughters that would be born to a female throughout her lifetime. ’.

Note: Another statistical study of the human population is population ecology which deals with how the human population interacts with environmental conditions concerning birth, death, migration, etc.