Devastating earthquakes struck Haiti in January 2010, forcing the native people to live under the most primitive of conditions. Which one of the following forms of immediate aid would most likely prevent the outbreak of cholera and dysentery in refugees who were not seriously harmed by the earthquakes?
1) Tents and blankets to help the people protect themselves from the sun and keep warm at night
2) Water purification systems and supplies of bottled water
3) Large supplies of rice and pots to cook the rice
4) A large supply of clothing, dish soap, and toiletries