Lala Lajpat Rai is the author of the book –

The correct answer is: C. Mother India

Lala Lajpat Rai was an Indian nationalist who was a leading figure in the Indian independence movement. He was a member of the Indian National Congress and was a strong advocate for swaraj, or self-rule. He was also a writer and journalist, and he wrote several books on Indian history and politics.

His most famous book is Mother India, which was published in 1907. In this book, Rai argued that India was a great and ancient civilization that had been brought to ruin by British rule. He called for Indians to unite and fight for their independence.

The other options are incorrect.

• A. India Divided is a book by V. P. Menon, published in 1950. It is a history of the partition of India.
• B. Unhappy India is a book by Katherine Mayo, published in 1927. It is a critical account of Indian society and culture.
• D. Hind Swaraj is a book by Mahatma Gandhi, published in 1909. It is a treatise on nonviolent resistance.