The correct answer is (c). Lord Dalhousie was regarded as the father of Electric telegraph in India.
Lord Dalhousie was the Governor-General of India from 1848 to 1856. He was a strong advocate of modernization and technological progress. In 1853, he sanctioned the construction of the first electric telegraph line in India. The line ran from Calcutta to Diamond Harbour. It was completed in 1854 and was a major technological breakthrough. It revolutionized communication in India and made it possible for messages to be sent over long distances in a matter of minutes.
Lord Canning was the Governor-General of India from 1856 to 1862. He was not directly involved in the construction of the first electric telegraph line in India. However, he did support the development of telegraphy in India and played a role in its expansion.
William Bentinck was the Governor-General of India from 1828 to 1835. He was a strong advocate of social and economic reforms. However, he was not directly involved in the construction of the first electric telegraph line in India.
None of the above options is correct.