How Does Karma,an Important Dogma in the Upanishads,translate into the Life

How does karma,an important dogma in the Upanishads,translate into the life of every Indian?

A) By making special demands on special tradesmen.
B) By explaining the responsibility of women in the household.
C) By stipulating the order of the hymns that are said in public by Brahmins.
D) By claiming that people's acts in this life would determine how they would be reborn in the next. 
E) By establishing the practice of sacrificial rituals.