HOW does the author introduce the idea that it took a while for the 1918 flu pandemic to become deadly?

A

by citing statistics about how many people were killed by the flu virus

B

by describing the different places where the flu virus first appeared

C

by comparing what happened in the two waves of the flu virus

D

by explaining how the death toll went up when healthy young people died from the flu virus

Sandra lives in the heart of a large city. lately, there have been robberies on several of the streets near where sandra lives but none on her street. sandra and her neighbors believe that they have not seen any crime on their street because they know each other, notice when strangers or strange cars are in the neighborhood, and have a mix of old retired couples and young families who use the neighborhood at different times of the day. jane jacobs would see this as an example of: