The correct answer is 1865.Telegraph in IndiaTelegraph communication between India and England was opened in 1865 by the Persian Gulf line. Hence, Option 3 is correct.Telegraph services in India date back to 1850, the first telegraph line, though only experimental was established between Calcutta and Diamond Harbour.The British East India Company started using the telegraph in 1851 and till 1854 telegraph lines were laid across the country.In 1854, the telegraph service was opened to the public and the first telegram was sent from Mumbai to Pune on this very day in 1854.Telegraph service thrived in India even after Alexander Graham Bell patented the telephone in 1876.From 1850 till 1902, the telegrams were sent through cable lines, but in 1902, the Indian system went wireless.Telegraph service was one of the major reasons why the British could quell the 1857 revolt.The telegraph service allowed the British to mobilize their troops swiftly which undid the plans of the rebellions.Mistake PointsIn 1854, the telegraph service was opened to the public and the first telegram was sent from Mumbai to Pune on this very day in 1854. Since it was sent within the territory of India hence 1854 is not the correct answer.