Question

Over the course of the passage, the main focus shifts from a

A :the description of an outbreak to the application of a scientific technique.
B :The dangers of disease to its proper prevention.
C :a city's polluted past to its modern sewage systems.
D :describing theories of disease transmission to specific examples of outbreaks.
.. .​

Answer 1

D

Step-by-step explanation:

describing theories of disease transmission to specific examples of outbreaks.