04. Krishna being the highest in the knowledge of the field of activities, why He explains it referring to the Vedanta-sutra?

a)    Because He likes it
b)    Because Arjuna learned all his teachings from Vedanta-sutra
c)    Because Vedanta-sutra are accepted as authority
d)    All of the above

The correct answer is
c)    Because Vedanta-sutra are accepted as authority