Answer:
The answer is A. A Caste System.
Step-by-step explanation:
Caste systems are systems in which the people of that society are born into certain categories that determine their way of life, opportunities, and social customs. Caste systems may be based on religious beliefs, historical influences, or a combination of many factors.
A caste system is one of the hereditary social classes in Hinduism that restrict the occupation of their members and their association with the members of other castes.