The correct answer is: b) The merger of Manipur into India.
The Manipur State Constitution Act was enacted in 1947, and it provided for the establishment of a separate state of Manipur within the Indian Union. However, the Act was never fully implemented, and it was eventually dissolved with the merger of Manipur into India in 1972.
The Kuki Rebellion was a major armed conflict that took place in Manipur from 1991 to 1997. The conflict was between the Kuki people and the Indian government, and it resulted in the deaths of thousands of people. However, the Kuki Rebellion did not lead to the dissolution of the Manipur State Constitution Act.
The rise of armed insurgency in Manipur is a more recent phenomenon. The insurgency began in the early 1990s, and it is still ongoing. The insurgency is being carried out by a number of different groups, including the National Socialist Council of Nagaland (NSCN) and the People’s Liberation Army (PLA). The insurgency has had a significant impact on the state of Manipur, and it has led to the deaths of thousands of people. However, the insurgency has not led to the dissolution of the Manipur State Constitution Act.
The 73rd Constitutional Amendment was passed by the Indian Parliament in 1992. The Amendment introduced a number of changes to the Indian Constitution, including the establishment of Panchayati Raj institutions at the village, intermediate, and district levels. The 73rd Constitutional Amendment did not have any direct impact on the Manipur State Constitution Act.
In conclusion, the Manipur State Constitution Act is considered by some to have been dissolved with the merger of Manipur into India in 1972. The Kuki Rebellion, the rise of armed insurgency in Manipur, and the 73rd Constitutional Amendment did not lead to the dissolution of the Act.