“Ex-post facto” means:

A. A known fact
B. An estimated certificate
C. With retrospective action or force 
D. None of these

🧠 Explanation:

“Ex-post facto” means with retrospective action, often used in legal contexts for laws applied retroactively. For law or language students, understanding this term highlights its legal significance, making it a key topic for studying legal terminology, jurisprudence, and retrospective policies.