Which statement best describes how the American Community Survey collects data?

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The main idea is that the American Community Survey operates as a continuous, monthly sample survey that produces annual estimates for the same geographic areas used in the decennial census long-form—down to census tracts and block groups. This design means data are collected every month from a portion of households and then aggregated to provide year-to-year estimates, ensuring comparability for small areas over time. It replaces the once-a-decade long-form approach with ongoing data collection, but it does so by sampling rather than surveying everyone. It also results in 1-year estimates for larger geographies and 5-year estimates for smaller ones, rather than a full national tally every year. The other statements aren’t accurate because the ACS is not a nationwide census of every household each year, it relies on sampled responses and other data collection methods beyond administrative records, and it does not survey all households monthly.