The correct answer is: B) Office of the Registrar General & Census Commissioner
The Office of the Registrar General & Census Commissioner is a statutory body under the Ministry of Home Affairs, Government of India. It is responsible for conducting the Census of India, which is a decennial exercise to collect and compile data on the population of India. The Census is used to determine the number of seats each state has in the Lok Sabha (the lower house of the Indian Parliament) and to allocate funds to states and districts. It is also used to provide data on a variety of topics, such as population growth, age distribution, literacy rates, and housing conditions.
The National Sample Survey Office (NSSO) is a government agency under the Ministry of Statistics and Programme Implementation. It is responsible for conducting sample surveys on a variety of topics, such as employment, unemployment, income, and expenditure. The NSSO does not conduct the Census of India.
State Statistical Bureaus are government agencies under the respective state governments. They are responsible for collecting and compiling data on a variety of topics, such as population, agriculture, industry, and trade. State Statistical Bureaus do not conduct the Census of India.