About the fifth century BC, the Indian satrapy was paying an annual tribute to 320 talents of gold to

Answer & Explanation

Answer: [B]

During the fifth century BC, the Indian satrapy (a province or territory) was paying an annual tribute of 320 talents of gold to Persia. This was during the Achaemenid Empire, which was ruled by Persian kings. The Achaemenid Empire, also known as the First Persian Empire, had control over a vast territory that included parts of present-day Iran, Afghanistan, Pakistan, and India. The Indian satrapy was one of the regions under Persian rule, and it contributed to the empire's wealth through the payment of tribute.