The first Telegraph line from Kolkata to Agra was opened in
D
Correct answer
Explanation
The first electric telegraph line in India was officially opened between Calcutta (now Kolkata) and Agra in 1853, marking the beginning of telecommunication in colonial India. This was part of the modernization efforts under Governor General Lord Dalhousie's administration, which prioritized infrastructure development for better governance and military coordination across vast distances.