Option a is the correct answer. Balban introduced the famous Persian festival 'Navroz' in India. Navroz, also known as Nowruz, is the Persian New Year, marking the first day of spring. Balban introduced the renowned Persian festival of Nowruz in India as a strategic move to showcase his opulence and authority to both the nobles and the general population. This initiative aimed to consolidate his influence and emphasize the grandeur of his reign through the celebration of the significant Nowruz festival. Important Tips Navroz Festival: Navroz is a spring festival that is celebrated by people of Iranian, Turkic, and other Central Asian and Middle Eastern cultures. It marks the first day of spring and the beginning of the new year. The date of Navroz varies from year to year, but it always falls on the first day of spring. In the Gregorian calendar, Navroz falls on March 21 or 22. In 1079 AD, a Persian (Iranian) king named Jalaluddin Malekshah introduced this festival to generate revenue and collect taxes from people. The festival is celebrated with a variety of customs, including feasting, dancing, and exchanging gifts. It is inscribed in the list of UNESCO Intangible Cultural Heritage of Humanity of India. In India it is known as Jamshed Navroz.