Ashtadhyayi:

• The term "Ashtadhyayi" literally translates to "Eight Chapters."
• Panini's work is structured into eight chapters, each dealing with specific aspects of Sanskrit grammar.

Comprehensive Grammar Rules:

• The Ashtadhyayi is a comprehensive and systematic exposition of the grammatical rules of Sanskrit.
• It covers phonetics, morphology, syntax, and semantics, providing a detailed and organized framework for understanding and composing Sanskrit sentences.

Foundation of Sanskrit Grammar:

• Panini's Ashtadhyayi is considered the foundational text of Sanskrit grammar.
• It laid the groundwork for the systematic analysis and description of the Sanskrit language, influencing linguistic studies for centuries.

Conciseness and Precision:

• Panini's grammar is known for its conciseness and precision. The rules are presented in a highly structured and logical manner.

So, the correct option is [2].