Explanation:

- Gram Panchayat: This is the basic or lowest level in the Panchayati Raj system. It operates at the village level and focuses on local governance.

- Kshettra Panchayat: Not a common term used in the mainstream Panchayati Raj structure. It might refer to regional or local governing bodies in certain areas, but not typically used elsewhere.

- Panchayat Samiti: This is the intermediate level in the Panchayati Raj Institutions, also known as the block-level governing body. It works between the Gram Panchayat and the Zilla Panchayat, focusing on development and coordination of activities at the block level.

- Zilla Panchayat: This is the highest level in the Panchayati Raj system. It operates at the district level and oversees various developmental activities within the district.

**