When was the regular decadal census started in Inida?
C
Correct answer
Explanation
The first regular decadal census in India started in 1881. While a census was conducted in 1872, it was a one-time effort. The 1881 census established the systematic practice of conducting a census every 10 years, which continues to this day. The 1881 census is therefore considered the beginning of India's regular decadal census cycle.