To conduct a survey about the type of phone service most people in Greenville prefer, 10 different blocks in the neighborhood are chosen. On these 10 blocks, 10 houses are selected at random, and then each resident of each of those houses is interviewed. This type of sampling method is

The neighborhood is divided into natural groups, or clusters, by block. The survey randomly selects blocks, then randomly selects houses within those blocks and interviews their residents, so it uses cluster sampling in multiple stages. It is not simple random sampling because residents are not selected directly from the entire neighborhood.

AI-written and checked against the verified answer.