Concept:This question tests knowledge of the author of the book 'India Divided', which is a critique of the Two-Nation Theory written by a major leader of the Indian independence movement who later became the first President of India.
Explanation:Dr. Rajendra Prasad wrote 'India Divided' while imprisoned in Bankipur Jail during the Quit India Movement (1942–1945).
The book was published in 1946.
It statistically and historically argues against the Partition of India, showing common Hindu-Muslim culture and warning against economic harm from division.
Jawaharlal Nehru wrote 'The Discovery of India', not 'India Divided'.
B.R. Ambedkar wrote 'Pakistan or the Partition of India' – a different book.
Vallabhbhai Patel is not known for this book.
Thus, the correct author is Rajendra Prasad.
Answer:B. Rajendra Prasad