The correct answer is: B) 10 years
The Census of India is a decennial (every 10 years) census of India. It is conducted by the Office of the Registrar General and Census Commissioner, India, under the Ministry of Home Affairs. The first census was conducted in 1872, and the most recent census was conducted in 2021.
The census collects data on the population of India, including age, sex, religion, language, literacy, and occupation. The data is used to plan for the development of the country and to allocate resources.
The census is a major undertaking, and it involves the participation of millions of people. The data collected by the census is used to make important decisions about the future of India.
The other options are incorrect because:
- Option A is incorrect because the census is conducted every 10 years, not every 5 years.
- Option C is incorrect because the census is conducted every 10 years, not every 15 years.
- Option D is incorrect because the census is conducted every 10 years, not every 20 years.