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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A. Sancho Panza , I believe
In the Canterbury Tales by Geoffrey Chaucer, after having introduced the pilgrims the narrator apologizes for the offense possible a reader might take from the tales. He then returns to the story about the night he spent with the pilgrims.
The host of the tavern welcomes the pilgrims and proposes the pilgrims to tell the story while traveling as it would be boring to travel in silence. Further, the narrator adds that hoping not to argue with the host the pilgrims agree immediately over the host's proposition.
Therefore, the host lay out the plan that each pilgrim will be telling two tales while going to Canterbury and two tales while return from there. As a result, in reward, the most meaningful story will receive a paid meal fro rest of the pilgrims on the way back.
Sure, humans can survive on their own, but in today's society everything - literally everything - is dependent on the goods and services of other people. Throughout the day we use products, interact with people as we use their services, and communicate with others as is our interdependent nature.
