The correct option is
D believed in the theory of Karma
Gautam Buddha taught his followers about four noble truths and eight-fold path. He believed in the theory of Karma. According to him, everyone has to reap the fruits of his good and bad deeds.
- He had no faith in rituals.
- He was against the caste system.
- He gave stress on Ahimsa or non-injury by thought, word or action.
- He also laid down a moral code of do's and don't for his disciples.