The correct answer is A) the requirement that government actions must adhere to the law.
The feature of modern Western democratic government that reflects Aristotle’s views as quoted is the requirement that government actions must adhere to the law.
Since ancient Greece times it was well known that power changed people. And people in power needs institutions that regulate their functions. If not, power begets dictators, and dictators commit atrocities with their citizens. So that is why Aristotle considered that "but the law is reason without desire." It had no passion and it must be enforced fairly to everyone.