statistics

A campaign is interested in knowing about support for their candidate. Which one of the following ways should they use to select a sample of adults from 100 households in their city? O Ask 25 adults at each of the 4 grocery stores located in different parts of the city. O Divide the town into 20 areas, and in each area ask 1 adult from each of the first 5 households that have someone at home. O Randomly select 20 campaign volunteers who then each ask 5 adult who live on their street. O Ask 1 adult from each of 100 households randomly selected from the city's household list