Who among the following is said to have devised many Raagas or melodies in Hindustani music?

Correct option is A

Tansen is said to have devised many Raagas or melodies in Hindustani music including Darbari Kanada, Miyan Ki Malhar, and Rageshree.
 Tansen was a prominent musician in the court of Mughal Emperor Akbar in the 16th century.
 Raja Birbal was Foreign Minister in the court of Mughal Emperor Akbar, known for his wit and intelligence.
 Todar Mal was Finance Minister in the court of Akbar.
 Raja Man Singh was a General in the army of Emperor Akbar, and also a patron of the arts.