Correct Answer: (c) 1989
Note: Hindi written in Devnagari script was declared the official language of Uttar Pradesh in October, 1947. In 1989, the Government of Uttar Pradesh passed U.P. Official Language (Amendment) Act 1989 and declared Urdu as the second official language of the state. Notably, Uttar Pradesh Urdu Academy was established in January, 1972 for the promotion of Urdu language.