जा, ये, कर, बस, बोल, पी या सारख्या मराठी भाषेतील मूळ धातूंना _____ म्हणतात.

The correct answer is Option B (सिद्ध शब्द).

Key Points:
• In Marathi vocabulary, words are divided into सिद्ध शब्द (root words) and साधित शब्द (derived words).
• The fundamental, primitive verbal roots (मूळ धातू) naturally present in the language without any prefixes or suffixes—such as जा, ये, कर, बस, बोल, पी—are specifically called सिद्ध शब्द (धातुसाधित सिद्ध शब्द).
• Option 2 (सिद्ध शब्द).
• सिद्ध शब्द are words already existing in their rudimentary form in the language. Roots like 'जा', 'ये', 'कर', 'बस' form the foundation from which derived words (साधित शब्द like जाणे, येणारा, करतो) are built.
• साधित शब्द: Words formed by adding prefixes or suffixes to basic roots.
• देशी शब्द: Traditional indigenous words of Maharashtra not borrowed from Sanskrit.
• तत्सम शब्द: Words borrowed directly from Sanskrit without modification.
• Key Takeaway: Fundamental verbal roots in Marathi (जा, ये, कर, बस) are classified as सिद्ध शब्द (primitive root words).