In the agrarian structure of ancient northern India, the village headman was traditionally known as:

The correct option is

Grama bhojaka

Explanation

In the post-Vedic and early historic period of ancient India, village administration became more structured. The terminology for agrarian roles differed significantly between the northern and southern parts of the subcontinent.

Option Analysis:

• Grama bhojaka Grama bhojaka: Correct. In the northern part of the subcontinent, the village headman was known as the Grama bhojaka. This position was typically hereditary. The Grama bhojaka was usually the largest landowner in the village and employed slaves and hired workers to cultivate the land. Due to his power and influence, the king often used him to collect taxes from the village. He also functioned as a judge and sometimes as a policeman.
• Grihapati: Incorrect. This term referred to independent farmers or smaller landowners. They were distinct from the large landowning headmen and the landless labourers.
• Vellalar: Incorrect. This term was used in the southern part of the subcontinent (Tamil region) to denote large landowners, as mentioned in early Tamil literature (Sangam texts). It is not the term for the village headman in northern India.
• Dasa karmakara Dasa karmakara: Incorrect. These were men and women who did not own land. They had to earn a living by working on the fields owned by others.

Key Takeaway: The Grama bhojaka was the hereditary village headman and tax collector in ancient northern India, whereas Vellalar referred to large landowners in the southern (Tamil) region.