1. Authority
Note the mention of "Nobel prize-winning scientist", which is generally the most prestigious scientists out there. What they say usually have authority and is believed by the ordinary people.
2. Emotion
First of all, how does the author know that the group is made up of "bigots". This is playing on the person's emotions, and trying to make them angry at their mistake, as well as give them a different group that they should look into.
3. Appeal to Logic
Note the usage of "make sense", as well as the building up of argument from the logical conclusion that "Diversity makes sense.. (via these reasons)".
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Your essay seems good to me
Answer:
"Maycomb was an old town, but it was a tired old town when I first knew it. In rainy weather the streets turned to red slop; grass grew on the sidewalks, the courthouse sagged in the square. Somehow it was hotter then: a black dog suffered on a summers day; bony mules hitched to Hoover carts flicked flies in the sweltering shade of the live oaks on the square. Men's stiff collars wilted by nine in the morning. Ladies bathed before noon, after their three-o'clock naps, and by nightfall were like soft teacakes with frostings of sweat and sweet talcum."
Explanation: it is Chapter 1 - 31
Kafka choose it because of the perception that a bug is perceived as a mindless systematic creature, a metaphor for the way Gregor lives his life, and acts in society