Correct Answer: Panini

Solution : The correct answer is Panini.

Panini was the first Sanskrit grammarian. He was the court scholar of Pushyamitra Shunga. He was a language expert and wrote a book on the grammar of Sanskrit known as Ashtadhyayi. The rules for classical Sanskrit grammar were established in this work. He provided a thorough and rational explanation of phonetics, phonology and morphology.