Which of the following designs captures a "snapshot" of a cohort at one time?

Question

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A cross-sectional design involves collecting data from a group of people at one point in time, which captures a snapshot of a cohort at that specific moment. Longitudinal designs follow participants over an extended period, randomized controlled trials involve experimental manipulation, and ABAB reversal designs involve alternating treatments to measure their effects; none of these designs solely capture a snapshot of a cohort at one time.

Which of the Following Designs Captures a "Snapshot" of a Cohort