Explanation:

- The title of Viceroy was established to denote the sovereign's representative in India following the transfer of powers from the East India Company to the British Crown.

- 1858: This is the correct answer. The title of Viceroy was first granted in 1858 after the Government of India Act 1858, which marked the end of the East India Company's rule and the beginning of direct rule by the British Crown.

- 1859: This option is incorrect. By 1859, the Viceroyalty was already established.

- 1856 and 1857: Both options are incorrect because the concept and title of the Viceroy were not in use until after 1857's Sepoy Mutiny.

1858 is the correct answer. .