What follows is an opinion from the Supreme Court of the United States. Your task is to determine the bases on which the Supreme Court rested its decision with regard to the legal provision that the Court considered in the case. Consider "judicial review (national level)" if the majority determined the constitutionality of some action taken by some unit or official of the federal government, including an interstate compact. Consider "judicial review (state level)" if the majority determined the constitutionality of some action taken by some unit or official of a state or local government. Consider "statutory construction" for cases where the majority interpret a federal statute, treaty, or court rule; if the Court interprets a federal statute governing the powers or jurisdiction of a federal court; if the Court construes a state law as incompatible with a federal law; or if an administrative official interprets a federal statute. Do not consider "statutory construction" where an administrative agency or official acts "pursuant to" a statute, unless the Court interprets the statute to determine if administrative action is proper. Consider "interpretation of administrative regulation or rule, or executive order" if the majority treats federal administrative action in arriving at its decision.Consider "diversity jurisdiction" if the majority said in approximately so many words that under its diversity jurisdiction it is interpreting state law. Consider "federal common law" if the majority indicate that it used a judge-made "doctrine" or "rule; if the Court without more merely specifies the disposition the Court has made of the case and cites one or more of its own previously decided cases unless the citation is qualified by the word "see."; if the case concerns admiralty or maritime law, or some other aspect of the law of nations other than a treaty; if the case concerns the retroactive application of a constitutional provision or a previous decision of the Court; if the case concerns an exclusionary rule, the harmless error rule (though not the statute), the abstention doctrine, comity, res judicata, or collateral estoppel; or if the case concerns a "rule" or "doctrine" that is not specified as related to or connected with a constitutional or statutory provision. Consider "Supreme Court supervision of lower federal or state courts or original jurisdiction" otherwise (i.e., the residual code); for issues pertaining to non-statutorily based Judicial Power topics; for cases arising under the Court's original jurisdiction; in cases in which the Court denied or dismissed the petition for review or where the decision of a lower court is affirmed by a tie vote; or in workers' compensation litigation involving statutory interpretation and, in addition, a discussion of jury determination and/or the sufficiency of the evidence.

Opinion:
SCHRIRO, DIRECTOR, ARIZONA DEPARTMENT OF CORRECTIONS v. SMITH
No. 04-1475.
Decided October 17, 2005
Per Curiam.
In 1982, an Arizona jury convicted respondent Robert Douglas Smith of first-degree murder, kidnaping, and sexual assault. He was sentenced to death. The convictions and sentence were affirmed on direct appeal, and Smith’s state petitions for posteonviction relief proved unsuccessful. Smith then filed a petition for a writ of habeas corpus in the United States District Court for the District of Arizona. In none of these proceedings did Smith argue that he was mentally retarded or that his mental retardation made him ineligible for the death penalty. Smith had, however, presented evidence in mitigation during the sentencing phase of his trial showing that he had low intelligence.
The District Court denied Smith’s petition for habeas corpus in 1996. Following several rounds of appeals, remands, and petitions for certiorari to this Court (including one successful petition by the State, see Stewart v. Smith, 536 U. S. 856 (2002) (per curiam)), and after we had issued our decision in Atkins v. Virginia, 536 U. S. 304 (2002), the case returned to the Ninth Circuit. Shortly thereafter, Smith asserted in briefing that he is mentally retarded and cannot, under Atkins, be executed. The Ninth Circuit ordered suspension of all federal habeas proceedings and directed Smith to “institute proceedings in the proper trial court of Arizona to determine whether the state is prohibited from executing [Smith] in accordance with Atkins.” App. to Pet. for Cert. A-2. The court further ordered that the issue whether Smith is mentally retarded must “be determined ... by a jury trial unless the right to a jury is waived by the parties.” Ibid.
The State’s petition for certiorari is granted, the judgment of the Court of Appeals is vacated, and the case is remanded. The Ninth Circuit erred in commanding the Arizona courts to conduct a jury trial to resolve Smith’s mental retardation claim. Atkins stated in clear terms that “ ‘we leave to the State[s] the task of developing appropriate ways to enforce the constitutional restriction upon [their] execution of sentences.’ ” 536 U. S., at 317 (quoting Ford v. Wainwright, 477 U. S. 399, 416-417 (1986); modifications in original). States, including Arizona, have responded to that challenge by adopting their own measures for adjudicating claims of mental retardation. While those measures might, in their application, be subject to constitutional challenge, Arizona had not even had a chance to apply its chosen proee-dures when the Ninth Circuit pre-emptively imposed its jury trial condition.
Because the Court of Appeals exceeded its limited authority on habeas review, the judgment below is vacated, and the case is remanded for further proceedings consistent with this opinion.
It is so ordered.
Srmth’s motion to proceed informa pauperis is also granted.

Question: What is the basis of the Supreme Court's decision?

Choices:
judicial review (national level)
judicial review (state level)
Supreme Court supervision of lower federal or state courts or original jurisdiction
statutory construction
interpretation of administrative regulation or rule, or executive order
diversity jurisdiction
federal common law

Answer: 6