If a test assesses all important aspects of a phenomenon, the test is said to have ________validity.

A) content
B) construct
C) concurrent
D) contextual

Content validity refers to the extent to which a test covers all the important and relevant aspects of the phenomenon it is designed to measure. Therefore, if a test assesses all important aspects of a phenomenon, it is said to have content validity. Construct validity refers to the extent to which a test measures the underlying theoretical construct it is meant to measure. Concurrent validity refers to the extent to which a test correlates with a criterion measure administered at the same time. Contextual validity refers to the extent to which a test is relevant and applicable to the specific context or population it is being used for.