Option d is the correct answer. Kitab-al-Hind or Tahqiq-i-Hind (History of India) was written by Al-Biruni, a Persian scholar and polymath who visited India in the 11th century CE and studied its culture, religion, science, and history. Rehla or Rihla (Travels) was written by Ibn Battuta, a Moroccan explorer and traveler who visited India and other countries in the 14th century CE and recorded his observations and experiences. Humayun Nama (Book of Humayun) was written by Gulbadan Begum, a Mughal princess and the daughter of Emperor Babur, who wrote the account of the life of her half-brother, Emperor Humayun, on the request of her nephew, Emperor Akbar. Badshah Nama or Padshahnama (Chronicle of the Emperor) was written by Abdul Hamid Lahori and Muhammad Waris, two Persian historians who wrote the official history of the reign of Mughal Emperor Shah Jahan in the 17th century CE.