What was the first written language of India?

Sanskrit

Explanation:

Sanskrit: Next in line is Sanskrit, the ancient language of India which can be traced back to 2000BC in its earliest written form. . While today only a very small group of people still speak the language, it has had a large influence on several western languages as part of the common Indo-European language root.

Explanation: Looked it up.

you answered your own : -/

answer; the parasympathetic nervous system;