Who proposed the germ theory of disease?

Who proposed the germ theory of disease?
 
  A) Robert Koch
  B) Louis Pasteur
  C) Joseph Lister
  D) Edwin Chadwick

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John Snow was able to interrupt a cholera epidemic in London by
 
  A) placing those infected in quarantine.
  B) removing a pump handle.
  C) promoting daily bathing.
  D) developing a new antibiotic.

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Who wrote the Report on an Inquiry into the Sanitary Conditions of the Labouring Population of Great Britain?
 
  A) John Snow
  B) James Lind
  C) Edwin Chadwick
  D) Thomas Muster

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During which period did the concept of disease contagion become more universally accepted?
 
  A) Roman Empire
  B) Middle Ages
  C) Renaissance
  D) Age of Enlightenment

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During the 1700s the miasmas theory held that
 
  A) disease was caused when vapors rising from rotting refuse were inhaled.
  B) an imbalance of the mind, body, and spirit caused disease.
  C) disease was caused by four humours: blood, phlegm, yellow bile, and black bile.
  D) parasites in the water caused most disease.