Ayurveda, originating in India over 3,000 years ago, is widely recognized as one of the world's earliest organized systems of medicine. The term 'Ayurveda' means 'knowledge of life' and its foundational texts include the Charaka Samhita and Sushruta Samhita. Options A (Homeopathy), B (Unani), and C (Siddha) are either later developments or originated outside India.