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Residents of three villages with three different types of water supply were asked to participate in a survey to identify cholera carriers. because several cholera deaths had occurred in the recent past, virtually everyone present at the time submitted to examination. the proportion of residents in each village who were carriers was computed and compared. classify this study:

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The answer is "cross-sectional study".

In medicinal research and sociology, a cross-sectional study is a sort of observational examination that breaks down information from a populace, or a representative subset, at a particular point in time, that is, cross-sectional data. A cross-sectional study might be simply illustrative and used to survey the recurrence and dispersion of a specific ailment in a characterized populace.

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