The correct option is C consolidation of caste system.
The Vedas are a collection of hymns and other ancient religious texts written in India between about 1500 and 1000 BCE. The caste system remains one of the most debatable topics in the study of Vedic culture. It divides the Hindus into four varnas: brahmin, ksatriya, vaisya and shudra. The system bestowed many privileges on the upper castes while sanctioning repression of the lower castes by privileged groups.