Which one of the following inscriptions speaks about the Kalabhras?

The Later Vedic Gangetic Plain reveals the Culture of the:

In 1956, Fr. Henry Heras proposed a theory that the Indus Script is:

The inscription that mentioned about the Kulasekharas for the first time ----------

Umbrella stones and hood stones represent the ------ phase of pre history of Kerala

Point out the name of a historian who was not associated with subalternhistoriography