Answer:
D. Were stuck in certain social classes.
Explanation:
Under the caste system, all people in India were stuck in certain social classes.
The Indian people were stuck in certain social classes (castes) because they were born into it. The only way one could have progressed up the caste system was by adhering to the rules of their caste, and then hopefully, they would be born into a higher caste in their next life. The caste system is closely connected to Hinduism, and the belief of reincarnation.
This caste system was composed of:
Brahmins - Religious leaders & educators
Kshatriyas - Ruling class & warriors
Vaishyas - Merchants
Shudras - Artisans
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Dalits/Untouchables - Lowest of the low, really not even included in the caste system