The head of a Gram Panchayat in Tamil Nadu is called the:

The correct answer is Gram Panchayat President.

A Gram Panchayat is the smallest unit of local self-government in India. It is a body of elected representatives who are responsible for the development and welfare of the village. The head of a Gram Panchayat is called the Gram Panchayat President. The Gram Panchayat President is elected by the members of the Gram Panchayat. The Gram Panchayat President is responsible for the day-to-day functioning of the Gram Panchayat. The Gram Panchayat President is also responsible for the implementation of the schemes and programs of the government at the village level.

The other options are incorrect.

• Sarpanch is the head of a Gram Panchayat in some states of India, but not in Tamil Nadu.
• Block Development Officer (BDO) is an officer of the government who is responsible for the development of a block. A block is a group of villages.
• District Collector is the head of a district. A district is a group of blocks.