The correct answer is: Gram Panchayat, Panchayat Union, District Panchayat.
The Panchayati Raj Institutions (PRIs) are local self-government institutions in India. They are constituted at three levels: village, block, and district. The PRIs in Tamil Nadu are as follows:
- Gram Panchayat: The Gram Panchayat is the lowest level of PRI. It is constituted for a village or a group of villages. The members of the Gram Panchayat are elected by the people of the village. The Gram Panchayat is responsible for the development of the village.
- Panchayat Union: The Panchayat Union is the intermediate level of PRI. It is constituted for a group of Gram Panchayats. The members of the Panchayat Union are elected by the people of the Panchayat Union. The Panchayat Union is responsible for the development of the Panchayat Union area.
- District Panchayat: The District Panchayat is the highest level of PRI. It is constituted for a district. The members of the District Panchayat are elected by the people of the district. The District Panchayat is responsible for the development of the district.
The PRIs in Tamil Nadu are elected every five years. The elections to the PRIs are held by the Election Commission of India. The PRIs in Tamil Nadu have been playing a vital role in the development of the state. They have been successful in providing basic amenities to the people, such as drinking water, sanitation, education, and health care. They have also been successful in promoting rural development.
The PRIs in Tamil Nadu are facing a number of challenges, such as corruption, lack of funds, and lack of coordination between the different levels of PRIs. However, they have the potential to play a major role in the development of the state.