How are Megaliths or memorial stones a source of information?

1. Information about religious beliefs
2. Information about tools and implements
3. Information about life of people
4. All of the above

Megaliths contain

1. Skeletons
2. Pottery
3. Iron objects
4. All of the above.

The Brahmanas during Sangam Age were respectable and learned. They served as

1. Priests
2. Judicial officers
3. Astrologers
4. All of the above.

The Vellalars were

1. landed aristocrats
2. priests
3. landless labourers
4. ploughmen