The correct answer is B. Office of the Registrar General & Census Commissioner.
The Office of the Registrar General & Census Commissioner (ORGC) is the nodal agency for conducting the Census in India. It is a statutory body under the Ministry of Home Affairs, Government of India. The ORGC is responsible for planning, organizing, and conducting the Census of India every 10 years. The Census is a comprehensive survey of the population of India, and it provides valuable data on the size, distribution, and characteristics of the population. The ORGC also publishes a number of reports and publications based on the Census data.
A. NITI Aayog is a policy think tank of the Government of India. It was set up in 2015 to replace the Planning Commission. NITI Aayog is not responsible for conducting the Census.
C. The National Sample Survey Office (NSSO) is a government agency responsible for conducting sample surveys in India. It is under the Ministry of Statistics and Programme Implementation. The NSSO does not conduct the Census.
D. State Statistical Bureaus are government agencies responsible for collecting and compiling statistics in the states of India. They are under the respective state governments. State Statistical Bureaus do not conduct the Census.