Correct option is A
The correct answer is (a) Primary Agricultural Credit Societies (PACS). PACS operate at the village or grassroots level and are the lowest tier in the cooperative credit structure in India. They provide short-term and medium-term loans to their members, mainly for agricultural purposes, including crop production, purchasing of equipment, and other agricultural needs. PACS are directly accessible to the farmer members and play a crucial role in meeting the financial needs of the rural agrarian community.