Answer:
You learn from your failures? I have no idea sorry
Explanation:
The sentence that shows the central idea of the given excerpt is <u>"Elizabethans do not understand infection and contagion as we do." </u>
According to the given excerpt, the narrator describes the Elizabethans as having a totally different understanding of infection when compared to most other people.
He notes that their understanding of infections is as a result of Galen's teachings who said that health is dependent on four humors: phlegm, yellow bile or choler, black bile and blood.
Therefore, the central idea or claim of the excerpt is that Elizabethans have a different understanding to infections than we do.
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