Answer:
The Correct Answer is mentioned below
Explanation:
Satraps were governors of provinces in the ancient Median and Achaemenid Empires, as well as in numerous of its successors, including the Sasanian and Hellenistic empires. The satrap acted as the king's viceroy, but with significant autonomy.
The satraps, who were appointed by the monarch, were usually members of the royal family or Persian nobles, and they served forever. As the head of his province's administration, the satrap collected taxes and was the supreme judicial authority; he was in charge of internal security and created and maintained an army. To prevent misuse of power, Darius established a system of checks and balances on the satrap. Top satrapy officials, as well as the commander of the garrison troops stationed in the province, were arrested.
Senior satrapy officials and the leader of the garrison soldiers stationed in the province reported directly to the monarch, and royal officials conducted occasional inspections. However, as central authority weakened in the mid-5th century BC, the satraps often enjoyed near-independence. Alexander III the Great and his successors kept the satrapal administration.