The correct answer is: b) www.tncensus.gov.in
The website www.tncensus.gov.in is the official website for accessing Census data in Tamil Nadu. It provides access to census data from the 2011 Census, as well as from previous censuses. The website also provides information on the census process, and on how to access census data.
The website www.censusindia.gov.in is the official website of the Census of India. It provides access to census data from all over India, but it does not provide specific data for Tamil Nadu.
The website www.data.gov.in is the official website of the Government of India’s Open Data Platform. It provides access to open data sets from a variety of government departments, but it does not provide specific data for Tamil Nadu.
The website www.opendata.gov.tn is the official website of the Government of Tamil Nadu’s Open Data Platform. It provides access to open data sets from a variety of government departments, including the Department of Census and Statistics. However, the data sets on this website are not as comprehensive as those on the website www.tncensus.gov.in.