'Amar Sonar Bangla', the national anthem of present day Bangladesh was written by which of the following poets?

Rabindra Nath Tagore

The correct answer is Option (2) → Rabindra Nath Tagore

Rabindra Nath Tagore is the only person in the world to have written the national anthems of two different nations: India (Jana Gana Mana) and Bangladesh (Amar Sonar Bangla). He is also often credited with inspiring the lyrics of the national anthem of Sri Lanka.