The correct answer is A. The violation of society's formally enacted criminal law.
It certainly cannot be a person’s rejection “of accepted ways of conducting oneself” or else adultery would be a crime and so would be masturbation. The violation of cultural norms is not a crime, since cultures change and evolve and barely a hundred years ago, women started liberating themselves from a patriarchal culture. Finally, rejecting all forms of technology is not a crime; otherwise the Amish would be considered criminals. In other words, morality, culture and technology are subject to debate and they influence criminal law but unless a particular aspect of culture or idea is objectively harmful to society it should not be declared a crime.