The correct answer is: Multiple languages.
The Census questionnaire is available in multiple languages, including English, Hindi, Bengali, Marathi, Gujarati, Tamil, Telugu, Kannada, Malayalam, Punjabi, Assamese, Oriya, Urdu, Nepali, and Maithili.
The Census is a national survey that is conducted every 10 years in India. It is used to collect data on the population, households, and economic activity in India. The data collected by the Census is used to plan for development and to make policies that benefit the people of India.
The Census questionnaire is available in multiple languages to make it easier for people to participate in the Census. The Census is a very important survey, and it is important that everyone has the opportunity to participate.