Which of the following dance form was earlier known as Daasiyattam?

The correct answer is Option (3) → Bharatnatyam

Bharatanatyam, the classical dance of Tamil Nadu, was earlier called Dasiattam or sadir, because it was performed by the devadasis in the temples of the south.

In the 1930s Rukmini Devi Arundale and E. Krishna Iyer brought it to the concert stage and gave it its present name. Kathak belongs to north India, Mohiniyattam to Kerala and Kuchipudi to Andhra Pradesh.