Answer & ExplanationAnswer: [C]
The author of the first-ever book on Islamic mysticism, Kashf al-Mahjub, is Ali Hujweri.
Ali Hujweri, also known as Data Ganj Bakhsh, was a Persian Sufi saint and scholar who lived in the 11th century. He is credited with writing the Kashf al-Mahjub, which is considered the earliest significant work on Islamic mysticism. The book explores various aspects of Sufism, including concepts, practices, and the spiritual journey. It is a renowned and influential text in the field of Sufi literature and has been widely studied and commented upon by scholars and practitioners of Sufism.
Shikh Fariduddin Ganj-i-Shakar, also known as Baba Farid, was a Punjabi Sufi saint and poet who lived in the 12th century. Ata Malik Juwaini was a Persian historian who wrote the "Tarikh-i-Jahan Gusha," a historical account of the Mongol Empire. Yahya Maneri was a 14th-century Indian Sufi saint, but he is not associated with the authorship of Kashf al-Mahjub.