Who among the following wrote the book Bahubivah?

The correct answer is Option 2: Ishwar Chandra Vidyasagar.

Ishwar Chandra Vidyasagar was a legendary polymath and social reformer who played a pivotal role in the Bengal Renaissance. He is best known for his crusade against social evils affecting women. He wrote the book Bahubivah (meaning "Polygamy") in 1871 to argue against the practice of high-caste Kulin Brahmins marrying multiple women, often leaving them in destitution.

• Why Option 2 is correct: Vidyasagar used his deep knowledge of Sanskrit scriptures to prove that polygamy lacked religious sanction. Bahubivah was a seminal text in his campaign for social justice.
• Why others are incorrect: Raja Rammohan Roy focused primarily on the abolition of Sati. Pandita Ramabai was a pioneer in women's education and wrote The High-Caste Hindu Woman. Rabindranath Tagore was a poet and novelist whose literary contributions were distinct from Vidyasagar’s specific legislative reform activism.