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The questions have been tested to ensure they measures what the researcher wants to measure. (Option D)
A questionnaire or scale that has been created to be used with the intended respondents is referred to as being validated. A representative sample should have been used to carry out the validation procedures, demonstrating sufficient reliability and validity.
When a test or measurement is "validated," it only implies that the researcher has concluded that the tool captures the data for which it was intended. Thus, legitimacy is nothing more than a matter of opinion.
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