Answer:
The letter D is the right answer.
Explanation:
The text presented by Darwin shows an argument that it was impossible to establish a Eurasian empire through nomadic foundations. However, the establishment of the Safavid Empire disputes this information, as this was one of the most influential and powerful Aryan empires ever seen in Eurasia. The Safávida Empire had a great cultural and religious influence that pierced even after its decline in 1722, reaching the Afexárida, Zande, Cajar and Pálavi dynasties. Currently, it is possible to see various elements of its influence in the current Islamic Republic of Iran.