Which of the Following Was the Most Significant Factor of Chandragupta

Multiple Choice

Which of the following was the most significant factor of Chandragupta Maurya's reign?

A) His alliance with Alexander the Great.
B) His adoption of Buddhism and making it the official religion of the kingdom.
C) His centralization of the first dynasty to control much of India.
D) His production of sacred texts including the Upanishads.
E) His engagement in long-distance trade with the Roman Empire.