Explanation:

- Option 1: Bhupen Hazarika

- Correct Answer: Bhupen Hazarika was a renowned Indian playback singer, lyricist, musician, poet, and filmmaker from Assam, India.

- He won the Best Music Director National Award for the Hindi movie 'Rudaali'.

- He was affectionately known as the ‘Bard of Brahmaputra’ for his deep connection with Assamese culture and the Brahmaputra River.

- Option 2: Manas Robin

- Manas Robin is an Assamese music director, lyricist, and singer, known for his contributions to Assamese music, but he did not win the National Award for 'Rudaali'.

- Option 3: Joi Barua

- Joi Barua is an Indian playback singer and musician, associated predominantly with the Assamese and Bollywood music industry. He has not won the National Award for 'Rudaali'.

- Option 4: Jayanta Hazarika

- Jayanta Hazarika was a prominent Assamese singer and composer, known for his contributions to Assamese music, but he was not involved with 'Rudaali'.

The correct answer is Bhupen Hazarika.