The characterization of Squealer supports the author's purpose by highlighting the ways in which propaganda can manipulate perception and rewrite history. Specifically, the correct choice would be:
Squealer's dramatic accusations draw parallels between him and Stalin’s propagandists.
Through Squealer’s persuasive rhetoric and his ability to reshape the narrative of events to serve the interests of the ruling class (Napoleon and the pigs), Orwell critiques the use of propaganda in totalitarian regimes. Squealer embodies the role of a propagandist who distorts truth and exploits the credulity of the masses, mirroring the tactics used by Stalin’s regime to maintain control and suppress dissent. This characterization illustrates how those in power can manipulate language and memory to maintain their dominance, which is a central theme in Animal Farm.