The correct answer is: c) 10 years.
The Census of India is a decennial (every 10 years) exercise conducted by the Government of India to ascertain the demographic, social, economic and cultural characteristics of the population of India. The first census was conducted in 1872, and the most recent census was conducted in 2021.
The census is used to collect data on the population of India, including the number of people, their age, sex, religion, language, education, occupation, and economic status. The data collected by the census is used to plan and implement development programs, to allocate resources, and to monitor the progress of development.
The census is also used to generate statistics on the population of India, which are used by researchers, policymakers, and the media. The census is a vital tool for understanding the population of India and for planning for its future.
The other options are incorrect because:
- Option a) is incorrect because the census is not conducted every 2 years.
- Option b) is incorrect because the census is not conducted every 5 years.
- Option d) is incorrect because the census is not conducted every 15 years.