If a data source has complete coverage but may undercount some population segments, it is best described as which data source?

• A. Hospital and Clinic Records
• B. Special Clinics/Hospitals
• C. Census Data
• D. School Health Programs

Answer: (C)

The main concept here is data source coverage: how completely they count the population and where gaps might exist. A census aims for complete coverage of the population, trying to count everyone. In practice, though, some groups—such as the homeless, undocumented residents, or people in hard-to-reach areas—are often undercounted. So you get near-total coverage with a known undercount in certain segments. That combination matches census data best. Other sources like hospital or clinic records, special clinics, or school health programs capture only people who use those services or belong to specific groups, so their coverage isn’t complete for the whole population.