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:
DAY & ZIMMERMANN, INC. v. CHALLONER et al.
No. 75-245.
Decided November 3, 1975
Per Curiam.
Respondents sued petitioner in the United States District Court for the Eastern District of Texas seeking to recover damages for death and personal injury resulting from the premature explosion of a 105-mm. howitzer round in Cambodia. Federal jurisdiction was based on diversity of citizenship. The District Court held that the Texas law of strict liability in tort governed and submitted the case to the jury on that theory. The Court of Appeals for the Fifth Circuit affirmed a judgment in favor of respondents. 512 F. 2d 77 (1975).
The Court of Appeals stated that were it to apply Texas choice-of-law rules, the substantive law of Cambodia, the place of injury, would certainly control as to the wrongful death, and perhaps as to the claim for personal injury. It declined nevertheless to apply Texas choice-of-law rules, based in part on an earlier decision in Lester v. Aetna Life Ins. Co., 433 F. 2d 884 (CA5 1970), cert. denied, 402 U. S. 909 (1971), which it summarized as holding that “[w]e refused to look to the Louisiana conflict of law rule, deciding that as a matter of federal choice of law, we could not apply the law of a jurisdiction that had no interest in the case, no policy at stake.” 512 F. 2d, at 80 (emphasis in original). The Court of Appeals further supported its decision on the grounds that the rationale for applying the traditional conflicts rule applied by Texas “is not operative under the present facts”; and that it was “a Court of the United States, an instrumentality created to effectuate the laws and policies of the United States.”
We believe that the Court of Appeals either misinterpreted our longstanding decision in Klaxon Co. v. Stentor Electric Mfg. Co., 313 U. S. 487 (1941), or else determined for itself that it was no longer of controlling force in a case such as this. We are of the opinion that Klaxon is by its terms applicable here and should have been adhered to by the Court of Appeals. In Klaxon, supra, at 496, this Court said:
“The conflict of laws rules to be applied by the federal court in Delaware must conform to those prevailing in Delaware’s state courts. Otherwise, the accident of diversity of citizenship would constantly disturb equal administration of justice in coordinate state and federal courts sitting side by side. See Erie R. Co. v. Tompkins, [304 U. S. 64, 74-77 (1938)].” (Footnote omitted.)
By parity of reasoning, the conflict-of-laws rules to be applied by a federal court in Texas must conform to those prevailing in the Texas state courts. A federal court in a diversity case is not free to engraft onto those state rules exceptions or modifications which may commend themselves to the federal court, but which have not commended themselves to the State in which the federal court sits. The Court of Appeals in this case should identify and follow the Texas conflicts rule. What substantive law will govern when Texas’ rule is applied is a matter to be determined by the Court of Appeals.
The petition for certiorari is granted, the judgment of the Court of Appeals is vacated, and the case is remanded for further proceedings in conformity with this opinion.
It is so ordered.
Mr. Justice Douglas took no part in the consideration or decision of this case.

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: 5
6