The agency's controversial decision was not based on any empirical evidence.
The word empirical most nearly means _________.

"Empirical" means verifiable by observation, experiment, or experience.
The other options do not have the same meaning as empirical.
- "Theoretical" concerns the theory of a subject of study rather than its practical application.
- "Irrefutable" means impossible to deny or disprove.
- "Questionable" means doubtful as regards truth or quality.