अण्णाभाऊ साठे यांनी साम्यवादी विचाराचा प्रसार करण्यासाठी खालील कलाप्रकाराचा प्रभावी वापर केला.

The correct answer is Option A (Drama). [Note: This question was officially cancelled (#) by MPSC in the final key, but this option is selectable for online practice].

Key Points:
• Commission Note: This question was officially cancelled (#) by MPSC in the final key (due to typographical or option discrepancies). For online evaluation and practice, this primary option is enabled.
• Detailed Explanation:
• Annabhau Sathe's Contribution: Tukaram Bhaurao Sathe (Annabhau Sathe) was a renowned communist writer, folk poet, and social reformer who used Marathi folk music, Shahiri, Powadas, and street theatre.
• Lal Bauta Kala Pathak: He founded the 'Lal Bauta Kala Pathak' (Red Flag Cultural Troupe) to create awareness among workers, peasants, and the downtrodden using multiple art forms like dramas, powadas, and street arts.
• Official MPSC Status: This question was cancelled (#)** by MPSC in the official final key as multiple options (Drama, Kala Pathak, Powada) were used concurrently by him.