Explanation:

4th option is incorrect i.e. Purushasukta occurs in the Rig Veda.

• Vedic literature contains different but not exclusive accounts of the origin of the universe. The simplest is that the creator built the universe with timber as a carpenter builds a house. Hence, there are many references to gods measuring the different worlds as parts of one edifice: atmosphere upon earth, heaven upon atmosphere. Creation may be viewed as procreation: the personified heaven, Dyaus, impregnates the earth goddess, Prithivi, with rain, causing crops to grow on her. Quite another myth is recorded in the last (10th) book of the Rigveda: the “Hymn of the Cosmic Man” (Purushasukta) explains that the universe was created out of the parts of the body of a single cosmic man (Purusha) when his body was offered at the primordial sacrifice. The four classes (varnas) of Indian society also came from his body: the priest (Brahman) emerging from the mouth, the warrior (Kshatriya) from the arms, the peasant (Vaishya) from the thighs, and the servant (Shudra) from the feet. The Purushasukta represents the beginning of a new phase in which the sacrifice became more important and elaborate as cosmological and social philosophies were constructed around it.
• In the same book of the Rigveda, mythology begins to be transformed into philosophy; for example, “In the beginning was the nonexistent, from which the existent arose.” Even the reality of the nonexistent is questioned: “Then there was neither the nonexistent nor the existent.” Such cosmogonic speculations continue, particularly in the older Upanishads. Originally there was nothing at all, or Hunger, which then, to sate itself, created the world as its food. Alternatively, the creator creates himself in the universe by an act of self-recognition, self-formulation, or self-formation. Or the one creator grows “as big as a man and a woman embracing” (Brihadaranyaka Upanishad) and splits into man and woman, and in various transformations the couple create other creatures. In one of the last stages of this line of thought (Chandogya Upanishad), the following account became fundamental to the ontology of the philosophical schools of Vedanta: in the beginning was the Existent, or brahman, which, through heaven, earth, and atmosphere (the triadic space) and the three seasons of summer, rains, and harvest (the triadic time), produced the entire universe.