The question asks about the primary origin of most rules of law. The provided options are:
The correct answer is typically considered to be Settled customs, as customs often precede formal legal codes and represent the established practices and norms of a society that eventually become codified into law. While religious texts, international treaties, and government mandates can also be sources of law, custom is often seen as a more fundamental and pervasive origin for many legal rules.
Ответ: Settled customs.