Final answer:
Nazrul and Rabindranath Tagore were prominent Bengali poets and writers. Tagore, the first non-European Nobel Laureate in Literature, inspired numerous writers globally. They were not brothers, only musicians, or merely freedom fighters.
Step-by-step explanation:
The connection between Nazrul and Rabindranath Tagore is that they were prominent Bengali poets and writers. Rabindranath Tagore, born on 7 May 1861 in Calcutta, was a versatile artist encompassing the roles of playwright, novelist, and poet, and he notably became the first non-European to win the Nobel Prize in Literature. His influence was profound, inspiring writers across the world, and his name is commemorated through various statues and museums.
Although the other options suggest different relations or roles, they are not accurate. They were not brothers, nor were they only Indian classical musicians, although Tagore did contribute to music. While Tagore was involved in the Indian independence movement and expressed his views through his writing, equating him solely with freedom fighting activities does not capture the full breadth of his work and impact.