What was the birth name of Purandaradasa?

The correct option is D. Srinivasa Nayaka ‌
Purandara Dasa born Srinivasa Nayaka; c. 1484 – c. 1565 was a Haridasa philosopher and a follower of Madhwacharya 's Dwaitha philosophy -saint from present-day Karnataka, India. He was a composer, singer and one of the chief founding-proponents of Carnatic music (Karnataka classical music). In honor of his significant contributions to Carnatic music, he is widely referred to as the Pitamaha (lit. "father" or "grandfather") of Carnatic music.