Bhraman is the highest caste or varna in the Vedic religion.
A person who is born to bhraman father and mother or bhraman father and kshatriya mother is considered as bhraman.
According to Vedic religion believes, a person who had dominance of satav Guna Karma in his previous life he will born as a bhraman in next life. Satav Guna Karma, means a person who is doing his duty without expecting any benifits, duty is first priority not benifits.