Q. Kalipatnam Ramarao, popularly known as ‘Kara Mastaru’passed away recently, he was a renowned _______? कालीपट्टनम रामाराव, जिन्हें 'कारा मस्तरू' के नाम से जाना जाता है, का हाल ही में निधन हो गया, वे एक प्रसिद्ध _______ थे?

1. Singer
2. Social activist
3. Writer
4. Painter