Number 2 is the answer I think
John Snow is known as the father of epidemiology.
In this essay "On the Mode of Cholera" he used both reasoned argument along with documentary evidence to show that cholera spread from person to person.
He gave examples of rows of houses on opposite sides to each other, and how all of the members in one row contracted cholera, while only one person on the opposite row contracted the disease.
Atticus Finch and Boo Radley. These men to me are considered mockingbirds. When thinking of mockingbirds I get a sense of innocence. Atticus is above all the other adults around him and he is kindly defending and respecting Boo as he does everyone else. Boo Radley is also a mockingbird because he was wrongly accused of sexual assault even though knowing his character he didn’t do it. His testimony was very powerful and eye opening.