practice it\ndegree to which a test measures what it purports to measure\nlegitimacy\nlegality\nviability\nva…

Brief Explanations:

Validity in testing refers to the degree to which a test measures what it is intended to measure. Legitimacy pertains to being in accordance with law or rules, legality is about compliance with the law, viability is about the ability to work or succeed, and authenticity is about being genuine.

Answer:

D. validity