The Ayurveda is a Hindu book of knowledge that

a. provides instructions for large-scale agriculture

b. describes the origins of Hindu gods and goddesses

c. recounts the historical migrations of the Aryans

d. contains ancient Hindu knowledge of medicine

The correct answer is letter D. contains ancient Hindu knowledge of medicine. The Ayurveda is a Hindu book of knowledge that contains ancient Hindu knowledge of medicine. Ayurveda is considered as a traditional Hindu system of medicine. It is based on the idea of balance in body and diet, herbal treatment, etc.