The correct answer is: A. Zila Parishad
The Assam Panchayat Act, 1994 defines Panchayat Raj Bodies as follows:
“Panchayat Raj Bodies” means the Gaon Sabha, Gaon Panchayat, Anchalik Panchayat and Zila Parishad constituted under this Act.
Therefore, the Zila Parishad is excluded from Panchayat Raj Bodies.
The Zila Parishad is a district-level body that is responsible for planning and implementing development programmes in the district. It is composed of elected representatives from the Gaon Panchayats and Anchalik Panchayats in the district.
The Gaon Sabha is a village-level body that is responsible for local self-governance in the village. It is composed of all the adult members of the village.
The Gaon Panchayat is a sub-district-level body that is responsible for planning and implementing development programmes in the sub-district. It is composed of elected representatives from the Gaon Sabhas in the sub-district.
The Anchalik Panchayat is a block-level body that is responsible for planning and implementing development programmes in the block. It is composed of elected representatives from the Gaon Panchayats in the block.