Concept:This is a direct factual question about the authorship of a well-known history book.
Explanation:The book "The World: A Family History" traces human civilization through the intimate lens of family dynasties and power structures.
It was written by Simon Sebag Montefiore, a British historian and author.
He is widely known for his historical works such as "Jerusalem" and "The Romanovs".
The book was also discussed by him in an interview with Indian historian Manu S. Pillai.
None of the other listed authors are connected to this particular book.
Answer:The correct author is Simon Sebag Montefiore, which corresponds to Option A.