In a Peruvian campaign to improve public health in rural areas, one key challenge was to convince isolated villagers to boil their drinking water in order to kill parasites. In a pilot study, this effort largely failed. Government caseworkers lectured the villagers about germ theory, but villagers associated hot foods with illness and didn't like the taste of boiled water. The only families who adopted the practice were not well integrated into the village and had few connections to their neighbors. What does this demonstrate?

That the Social ties not only connect us to others but they also  influence our behavior

Explanation:

According to the given question, the Peruvian campaign is one of the type of program that helps in improve the public health in the various types of rural areas like small villages.

 The main objective of this campaign is to provide awareness about the germs in the drinking water so the members of this campaign take the initiate to convince to villagers to boil water before drink water so this type of scenario is basically demonstrating about the social ties.

 The social ties helps in adopting the practices and also provide awareness to the neighborhood people so the social ties helps in connecting the people each other and also influences the behavior.

 Therefore, the given answer is correct.  

president reagan was a good presidant and should be presidant if he was still alive

explanation:

i believe that the answer to the question provided above is that the role of campaign committees is to act as a bridge between state and local campaigns.