Explanation:

- The book "The Free Voice: On Democracy, Culture and the Nation" is indeed written by Ravish Kumar, a prominent Indian journalist known for his critical perspectives on issues of democracy and media in India.

- *Option 3: Ravish Kumar* - He is the author of the book and is recognized for his contributions to journalism and his role as a television anchor.

- Option 1: Barkha Dutt - Another well-known Indian journalist, but not the author of this book.

- Option 2: Rahul Kanwal - A respected journalist in India, but he did not write this book.

- Option 4: Arnab Goswami - He is also a famous Indian news anchor, yet he is not connected to this book.