Aristocracy means a condition when the nobles <em>rule</em> over the people within a society. Democrat means a society that is<em> ruled</em> over by the will of the majority of the people. Monocrat meeans a society that is<em> ruled </em>over by one single person alone.
The root words are illustrated as the basic words that help derive new words by adding prefixes and suffixes. These words help form a number of derivatives from the basic root words.
As per the question, the root word employed for meaning 'rule' is '-crat' that has Greek origin and '-cracy' from English. The words that contain this meaning are 'aristocracy' that implies 'rule of the nobility class', 'democrat' that means 'supporter of democratic(people's) rule), and 'monocrat' that proposes the meaning 'absolute rule by a monarch or dictator'. Thus, options <u>A, C, and F</u> are the answers.