In india, the introduction of sanskrit, hinduism, and the caste system all occurred during the time period of

Aryan civilazation. The word "Arya" is derived from Sanskrit word meaning self-designation. The Aryan race was a racial gathering term utilized as a part of the time of the late nineteenth century to the mid-twentieth century to portray numerous people groups.

During the Aryan civilisations.

It is the second answer