पुढीलपैकी सिद्ध शब्द कोणते ?

The correct answer is Option B (जा, कर, बस).

Key Points:
• The key concept is understanding 'Siddha' (सिद्ध) and 'Sadhit' (साधित) words.
• 'सिद्ध शब्द' (root words) are pure original words that do not have any prefixes (उपसर्ग) or suffixes (प्रत्यय).
• The words 'जा', 'कर', and 'बस' are original root verbs in Marathi, making them perfectly Siddha words.
• All other options contain affixes. For example, 'प्रतिकार', 'आहार', 'अपहार' have prefixes (Sadhit/Upasargaghatit). 'कर्ता', 'करणारा' have suffixes (Sadhit/Pratyayghatit).
• Key Takeaway: Base root words with no prefixes or suffixes are known as 'सिद्ध शब्द' (e.g., ये, जा, खा, कर).