The Census questionnaire is available in:

English only
Hindi only
Multiple regional languages
English and Hindi only Answer: c

The correct answer is c) Multiple regional languages.

The Census questionnaire is available in multiple regional languages, including Hindi, Bengali, Gujarati, Kannada, Malayalam, Marathi, Oriya, Punjabi, Tamil, Telugu, and Urdu. This is to ensure that all residents of India can participate in the census, regardless of their language.

Option a) is incorrect because the Census questionnaire is not available in English only. Option b) is incorrect because the Census questionnaire is not available in Hindi only. Option d) is incorrect because the Census questionnaire is available in more than just English and Hindi.