Which of the following text introduces bhakti marga (the path of faith/devotion) as one of three ways to spiritual freedom and release?

Q. Which of the following text introduces bhakti marga (the path of faith/devotion) as one of three ways to spiritual freedom and release?

A.            Vedas

B.            Vedanta

C.            Brahamans

D.            Bhagwat Gita

Answer: Bhagwat Gita