A teenager using current slang to distance herself form her parent´s generation might be an example of divergence. In this case language is use to make a clear difference in connection to linguistics. Language trigger a desire to be different and motive changes.<span />
Answer:
Living conditions in many of the city's tenements did endanger the health of residents. ... of the ideas that would influence the emerging field of public health. ... De Wolf's methods for preventing the spread of contagious disease ... of recently arrived Polish, Greek, Italian, and Eastern European families.
The answer would be choice C. Thomas Edison's recorded discussions with Ford on mass production. This source is a credible primary source because it is coming straight from the source.