The annual music festival dedicated to Purandaradasa:

Thyagaraja Aradhana
Hampi Utsav
Purandaradasa Aradhana
Mysore Dasara

The correct answer is C) Purandaradasa Aradhana.

Purandaradasa Aradhana is an annual music festival dedicated to the 16th-century Indian saint-composer Purandaradasa. It is held in Hampi, Karnataka, India, on the full moon day of the month of Ashada (June–July). The festival features performances of Carnatic music, dance, and drama, as well as lectures and discussions on Purandaradasa’s life and work.

Thyagaraja Aradhana is an annual music festival dedicated to the 18th-century Indian saint-composer Thyagaraja. It is held in Tirupati, Andhra Pradesh, India, on the full moon day of the month of Margazhi (December–January). The festival features performances of Carnatic music, dance, and drama, as well as lectures and discussions on Thyagaraja’s life and work.

Hampi Utsav is an annual cultural festival held in Hampi, Karnataka, India. The festival features performances of music, dance, drama, and other traditional arts, as well as exhibitions of handicrafts and other local products.

Mysore Dasara is an annual festival held in Mysore, Karnataka, India. The festival features a procession of elephants, a display of fireworks, and other cultural events.