Answer:
Option C.
Explanation:
The caste system and use of coins, is the right answer.
The caste system in India emerged during the time of Vedic Civilization. This was the time when the Vedas were compiled. The first reference of the Caste System comes from the Tenth Mandala of the Rigveda. In this Mandala, the social stratification of the Indian community is clearly visible. According to this stratification, Indian society was divided into four Varnas. This system of Varna was flexible in the Rigveda however, during the Post-Vedic Period it becomes a rigid system.
The emergence of coins in India can be dated back to the Sixth Century B.C.E. During this time, the Second Urbanization took place and in place of a barter system, traders and merchants began using coins. The primary coins that people used were known as the Punch-Marked Coins.
