The correct answer is B. Immanuel Kant.
A Critique of Pure Reason is a book by the German philosopher Immanuel Kant, first published in 1781. It is considered one of the most influential works in the history of philosophy. The book is a critical examination of the foundations of metaphysics, epistemology, and ethics. Kant argues that the human mind has certain innate structures that shape our experience of the world. He also argues that we can only know things that are in accordance with our own cognitive faculties.
Charles Dickens was an English novelist who wrote many famous novels, including A Tale of Two Cities, Oliver Twist, and David Copperfield. Girish Karnad is an Indian playwright and actor who wrote many plays about Indian history and culture. Shashi Tharoor is an Indian politician and writer who has written many books on Indian history and politics.
A Critique of Pure Reason is not a book about any of these topics. It is a book about philosophy.