Answer:
US constitution is the correct answer.
Step-by-step explanation:
Article 6, Clause 2 (The Supremacy Clause) of US constitution declares constitution to be the supreme law of USA and makes the federal laws consistent with it. Priority is given to the constitution in case of any conflicts with state laws. It also declares that state courts are bound by the constitution and all state constitution are subordinate to it. The federal treaties and statutes are supreme if they do not violate the constitution. If there is a conflict between federal and state laws then Federal acts are considered superior.