The correct answer is A. It gives insight to the world of. Ibn Buttuta's book is important to historians because it provides valuable insights into the world of the 14th-century and the marvels of travel during that time. His detailed descriptions of cities, people, cultures, customs, and landscapes offer a glimpse into the diverse and interconnected world of the medieval era. It is a valuable primary source for historians studying various aspects of social, economic, and political life during that period.