Explanation:

- Padma Subrahmanyam is renowned for the classical dance form:

- ?? Bharatanatyam (Option 1)

- A classical dance form from Tamil Nadu.

- Known for its fixed upper torso, bent legs, intricate footwork, and sophisticated gestures.

- Padma Subrahmanyam has contributed immensely through her research and performances.

- Kathak (Option 2)

- Originates from North India.

- Known for expressive gestures and rapid footwork.

- Kuchipudi (Option 3)

- Comes from Andhra Pradesh.

- Features a mix of dance and drama, with elaborate footwork.

- Mohiniyattam (Option 4)

- Traditional dance from Kerala.

- Emphasizes graceful, swaying body movements.