Which of the following event was responsible for the dismissal of the state government and imposition of The President's Rule in Uttar Pradesh in 1992?

Demolition of the Babri mosque.

Thousands of people gathered from all over the country at Ayodhya on 6 December 1992 and demolished the Babri mosque. The events at Ayodhya led to a series of other developments. The State government, with the BJP as the ruling party, was dismissed by the Centre. Along with that, other States where the BJP was in power, were also put under President’s rule.