The correct answer is: B. Gramini
The Gramini was the head of a village or a grama in the Vedic age. He was responsible for the administration of the village, including the collection of taxes, the maintenance of law and order, and the settlement of disputes. He was also the chief priest of the village and conducted all religious ceremonies.
The Kulapa was the head of a clan or a kula in the Vedic age. He was responsible for the welfare of the members of his clan and settled disputes between them. He also led the clan in battle.
The Vispati was the head of a tribe or a vis in the Vedic age. He was responsible for the administration of the tribe and led it in war.
The Gopati was the head of a herd of cattle or a goshala in the Vedic age. He was responsible for the care and protection of the cattle and their milk.
The Gramini was the most important figure in the village in the Vedic age. He was responsible for the welfare of the villagers and their property. He was also the chief priest of the village and conducted all religious ceremonies.