The main purpose of assessing content validity is to ensure:

Assessing content validity is primarily concerned with ensuring that a test or measurement tool accurately reflects the complete range of the concept it is intended to measure. This means that all relevant aspects of the construct must be represented within the test. For example, if a test is designed to measure depression, it should encompass all behaviors, emotions, and cognitions that are significant markers of depression, rather than just a few selected symptoms.

Content validity is established through a systematic process that typically involves expert judgment to evaluate whether the items on the test cover the full domain of the construct comprehensively. It emphasizes the importance of aligning the test items with the theoretical framework of the construct being measured, which is crucial for meaningful interpretation of test results.

While high correlation with predictive measures, consistency in scores, and relationships with known outcomes are important aspects of construct validity and other types of validity, they are not the focus of content validity. Instead, content validity specifically targets the adequacy and relevance of the test content itself in representing the construct, making the correct answer the one that highlights this crucial relationship.