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chapter 1: the 1854 cholera outbreak near broad street in london came to an end when
select one:
a. it became mandatory to boil water before drinking it
b. bottled water became available
c. treatment of the public water supply was initiated
d. the handle was removed from the broad street pump

Explanation:

The 1854 cholera outbreak near Broad Street in London was investigated by John Snow. He hypothesized that the water from the Broad Street pump was contaminated. Removing the handle from the Broad Street pump helped stop the spread of cholera as people could no longer get water from the contaminated source.

Answer:

d. The handle was removed from the Broad Street pump