Final answer:
A writ of mandamus is a court order that compels a public official to obey a law.
Step-by-step explanation:
A writ of mandamus is a court order that can be used to compel a public official to carry out a law. It is a legal document issued by a court, typically signed by a judge, directing a public official to perform a specific action. This order is often used when other branches of government fail to act or make a decision, such as when state courts are unable to come up with a decision.