Correct option is D
Correct Option: (D) Rigveda
The Rigveda is the first and oldest of the four Vedas, making it the earliest known scripture of Hinduism and Indian literature.
It is believed to have been composed around 1500–1200 BCE.
The Rigveda consists of 1,028 hymns (suktas) organized into 10 mandalas (books), mainly dedicated to natural forces and deities like Agni, Indra, Varuna, and Surya.
Language: Vedic Sanskrit
Focus: Hymns for rituals, nature worship, and philosophical ideas
It is an essential source of information on:
Early Vedic civilization
Social structure
Religious practices
Samveda:
Mainly contains chants and melodies derived from Rigveda, used in rituals and singing.
Yajurveda:
Focuses on ritual formulas and sacrificial rites.
Atharvaveda:
Contains spells, incantations, and knowledge related to healing, daily life, and magic.