Questionnaires and interviews provide systematic frameworks for gathering data from respondents under______________?
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Answer: B. Scientific control
Explanation
Scientific control ensures that data collection follows rigorous and standardized procedures. Questionnaires and interviews maintain consistent questioning to minimize researcher bias. This structured approach allows researchers to compare respondent answers accurately. Scientific control involves minimizing outside variables that might distort research findings. Structured interviews use identical question sequences for every single participating subject. Standardized questionnaires allow for quantitative measurement and statistical hypothesis testing.
Researchers employ these controlled methods in large-scale social surveys and polling. Controlled data collection is essential for establishing reliable correlations between variables. Public health studies rely on structured questionnaires under strict methodological controls. Option A is incorrect because experiments represent a different research design entirely. Option C is too vague and lacks the formal rigor of scientific control. Option D is wrong since the correct answer is explicitly provided among choices.
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