Answer & ExplanationAnswer: [C]
In ancient Indian social structure, the term aniravasita was related to shudras only.
The term "aniravasita" was specifically related to the Shudras in ancient Indian social structure. It referred to those who were outside the four Varna categories (Brahmanas, Kshatriyas, Vaisyas, and Shudras). So, the correct answer is option C.