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:
PALERMO v. LUCKENBACH STEAMSHIP CO., INC.
No. 350.
Decided October 21, 1957.
Philip F. Di Costanzo for petitioner.
Eugene Underwood and William M. Kimball for respondent.
Per Curiam.
The petition for certiorari is granted, and the judgment of the Court of Appeals is reversed and the case is remanded. We hold that the trial court did not commit reversible error in refusing to charge respondent’s request No. 12. The petitioner’s alleged choice of a more dangerous route did not, under the proofs, operate to bar recovery as a matter of law. The jury was properly instructed that the petitioner’s negligence, if any, was to be considered in mitigation of damages under the rule applicable in actions for personal injuries arising from maritime torts. Poye & Talbot, Inc., v. Hawn, 346 U. S. 406, 408-409; cf. Socony-Vacuum Oil Co. v. Smith, 305 U. S. 424.
For reasons set forth in his opinion in Rogers v. Missouri Pacific R. Co., 352 U. S. 500, 524, Mr. Justice Frankfurter is of the view that the writ of certiorari is improvidently granted.
[For memorandum of Mr. Justice Harlan, joined by Mr. Justice Burton and Mr. Justice Whittaker, see ante, p. 19.]
[Amended, post, p. 910, to provide for remand of the case to the Court of Appeals.]

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: 2
6