Final answer:
The quote from 'Harrison Bergeron' that illustrates the theme of the dangers of enforced equality is Option D, where announcers have speech impediments, showing dysfunction in communication for the sake of 'equality'.
Step-by-step explanation:
The quotation from “Harrison Bergeron” by Kurt Vonnegut Jr. that best develops the theme that attempting to make everyone “equal every which way” is a foolish and dangerous goal is Option D: “It wasn’t clear at first as to what the bulletin was about, since the announcer, like all announcers, had a serious speech impediment.” This quote illustrates the extreme measures the society in the story takes to ensure everyone is 'equal', even to the point of hindering communication, a critical element of society. This impediment in announcers, who are charged with the important task of conveying information to the public, highlights the absurdity and inherent dysfunction of a system that values imposed uniformity above practical ability or natural talent.