Answer: D. rule of law
Step-by-step explanation:
Socrates once said that humans without rules are nothing but animals. This is an apparent reference to the savagery of the animal kingdom that can see violence occur at the slightest provocation. The Rule of Law refers to the governing principle that everyone is subject to laws that were enacted to ensure that people live together in such a way as not to infringe on the rights of others and thus to prevent societal breakdown.
This is why a general acceptance of it can keep the general peace and keep situations from getting violent. For example, if two people got into an accident and could not agree on who was wrong, if there were no laws on how such an issue would be handled, there would probably be violence between the two. Granted violence might still occur but the incidence rate of this has been greatly reduced thanks to a general agreement to respect the rule of law.