Correct option is A
Information Booster:
The Nāsadīya Sūkta (also spelled Nasadiya Sukta) is one of the most profound philosophical hymns of the Rigveda.It is found in Rigveda – Mandala 10, Hymn 129.It explores the origins of the universe, creation, and cosmic mystery.It raises questions about how the universe came into existence and whether even the gods know the truth of creation."Whence this creation has arisen—perhaps it formed itself, or perhaps it did not—He who surveys it in the highest heaven, he only knows—or perhaps he does not know.”
Samaveda – Mainly deals with melodies and chants.
Yajurveda – Focuses on sacrificial formulas.
Atharvaveda – Contains spells, charms, and everyday rituals.