Passage task 220: A medical admissions tutor asks the candidate to evaluate the supplied text without adding outside assumptions. The setting is a population-health workshop. In the 22-week water conservation project in the alpine district, which limitation most directly threatens measurement validity?

Passage task 220: A medical admissions tutor asks the candidate to evaluate the supplied text without adding outside assumptions. The setting is a population-health workshop. In the 22-week water conservation project in the alpine district, which limitation most directly threatens measurement validity?

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