Correct Answer: (a) Patanjali
Solution:Maharshi Patanjali is known as the founder of 'Yoga Darshan.' Although the history of yoga in Indian tradition is very old. The description about yoga is found in Upanishad, Mahabharat, Bhagavad Geeta, Jain and Buddha texts. However, Maharshi Patanjali explained it as a compact philosophical theory. So it is called as 'Patanjali Darshan'.