Answer & ExplanationAnswer: [B]
The correct answer is Rigveda. Purusha suktam is hymn 10. 90 of the Rigveda, dedicated to the Purusha, the "Cosmic Being". Rig Veda Purusha sukta is the Xth mandal of the Rig Veda that explains the origin of four varnas viz. Brahmana, Kshatriya, Vaishya and Shudra.