Classification – Odd one out (three Vedas vs system of medicine): Identify the outlier: Rigveda, Yajurveda, Atharveda, Ayurveda.

Introduction / Context:In Indian tradition, the four principal Vedas are Rigveda, Yajurveda, Samaveda, and Atharvaveda. Ayurveda, while ancient and Veda-adjacent in ethos, is a system of medicine, not one of the four canonical Vedas.

Given Data / Assumptions:

• Rigveda → canonical Veda.
• Yajurveda → canonical Veda.
• Atharveda (Atharvaveda) → canonical Veda.
• Ayurveda → classical system of medicine.

Concept / Approach:Classify by canonical status: “Veda” vs “medical corpus.” The medical system is the outlier.

Step-by-Step Solution:Rigveda, Yajurveda, Atharvaveda → Vedas.Ayurveda → not a Veda; medicinal tradition.

Verification / Alternative check:Samaveda is missing from the list; nevertheless, three given items are Vedas, one is not.

Why Other Options Are Wrong:

• Rigveda, Yajurveda, Atharvaveda belong to the same canonical category.

Common Pitfalls:Assuming any “-veda” suffix implies canonical status; Ayurveda means “knowledge of life,” not one of the four Vedas.

Final Answer:Ayurveda