Final answer:
The quote from "Harrison Bergeron" that reflects the suppression of education and intelligence by an authoritarian government is the one describing the enforced equality through constitutional amendments and the unceasing vigilance of the Handicapper General.
Step-by-step explanation:
The lines from "Harrison Bergeron" that best support the theme that authoritarian governments thrive on the ignorance of the populace and on the suppression of education by limiting intelligence and knowledge are:
"Nobody was smarter than anybody else. Nobody was better looking than anybody else. Nobody was stronger or quicker than anybody else. All this equity was due to the 211th, 212th, and 213th Amendments to the Constitution, and to the unceasing vigilance of agents of the United States Handicapper General."
This quotation explicitly mentions the role of the government in enforcing equality at the expense of personal excellence and the suppression of individual intelligence and ability. It reflects how the government's control results in a deliberate equalization that stagnates intellectual growth and knowledge, embodying the theme of authoritarian governments restricting education and intelligence.