The correct option is All three pairs.
Explanation
The 73rd Constitutional Amendment Act, 1992, institutionalized a three-tier structure of Panchayati Raj institutions in India. While the hierarchical levels are mandated by the Constitution (except for states with a population of less than 20 lakhs), the specific nomenclature for these bodies can vary across different states.
- Pair 1 is correctly matched: The Gram Panchayat operates at the Village Level. It is the basic unit of local administration and decision-making, comprising elected representatives from the village.
- Pair 2 is correctly matched: The institution at the Block Level (Intermediate Level) is known by various names. While "Panchayat Samiti" is a common term, it is officially called the Janpad Panchayat in states like Madhya Pradesh. It coordinates the activities of the Gram Panchayats within the block.
- Pair 3 is correctly matched: The Zila Parishad operates at the District Level. It is the apex body of the Panchayati Raj system in a district, responsible for making developmental plans at the district level and overseeing the block-level bodies.
Key Takeaway: The standard three-tier Panchayati Raj system consists of the Gram Panchayat at the village level, the Janpad Panchayat (or Panchayat Samiti) at the block level, and the Zila Parishad at the district level.