Answer: C) About 1,000 miles.
Explanation: Pataliputra was a city in ancient India, that became the capital of major powers, today it is adjacent to Patna and the Khyber Pass is a mountain pass in the northwest of Pakistan, on the border with Afghanistan. The distance between Pataliputra and the Khyber Pass is about 1,643 Km, that is equivalent to about 1,000 miles, so the correct answer is the corresponding to option C.
