The writer would need to determine:
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The methods used by the survey author to conduct the survey - This is important to ensure that the survey was conducted in a valid and reliable manner, which affects the credibility of the results.
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Whether the survey reflects the experiences of most people - Understanding if the survey accurately captures a broad spectrum of opinions is crucial to determining if the findings can be generalized to a larger population.
These two factors are essential for evaluating the reliability and applicability of the survey as evidence in support of using genetically modified ingredients in school cafeterias.