The correct answer is: B. In 10 years
A census is a count of a country’s population. It is conducted by the government to collect information about the population, such as age, sex, education, and employment. The census is used to plan for the future, such as by determining how many schools and hospitals are needed.
In India, the census is conducted every 10 years. The last census was conducted in 2011. The next census will be conducted in 2021.
The census is a very important process. It helps the government to understand the needs of the population and to plan for the future.
The other options are incorrect because they are not the frequency of the census in India.