Explanation:

The first Census in India was conducted at the time Lord Mayo. Richard Southwell Bourke or Lord Mayo was the fourth Viceroy of India who held office from 1869 to 1872. In 1871, he organized the Statistical Survey of India, which, under the direction of William Wilson Hunter, “produced a printed account of each district, town, and village, carefully compiled upon local inquiry, and disclosing the whole economic and social facts in the life of the people.”  Hence option 3rd is correct.

Note: India’s first official census was conducted in 1881. During the Viceroyship of lord Ripon.