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:
DONOVAN v. PENN SHIPPING CO., INC., et al.
No. 76-613.
Decided February 22, 1977
Per Curiam.
The petitioner, while employed by the respondents as a seaman on the SS Penn Sailor, slipped on wet paint, injuring his right wrist and elbow. He sued the respondents under the Jones Act, 46 U. S. C. § 688, and obtained a $90,000 verdict at his juiy trial. The respondents moved to set aside the verdict as excessive. Fed. Rules Civ. Proc. 50, 59. The District Court granted the motion, and ordered a new trial on damages unless the petitioner agreed to remit $25,000 of the $90,000 award.
After some time the petitioner submitted to the District Court a proposed order stating that he accepted “under protest” the reduced verdict of $65,000, but reserving nonetheless “his right to appeal therefrom.” This language was adopted by the District Court in entering a judgment for the petitioner in the amount of $65,000.
The petitioner sought appellate review of the District Court’s decision to order a conditional new trial. In so doing he asked the Court of Appeals for the Second Circuit to discard the settled rule that a plaintiff who has accepted a remittitur may not appeal to seek reinstatement of the original verdict. The Court of Appeals refused the petitioner’s invitation, and dismissed the appeal. 536 F. 2d 536.
The Court of Appeals properly followed our precedents in holding that a plaintiff cannot “protest” a remittitur he has accepted in an attempt to open it to challenge on appeal. A line of decisions stretching back to 1889 has firmly established that a plaintiff cannot appeal the propriety of a remittitur order to which he has agreed. Kennon v. Gilmer, 131 U. S. 22, 29-30 (1889); Lewis v. Wilson, 151 U. S. 551, 554-555 (1894); Koenigsberger v. Richmond Silver Mining Co., 158 U. S. 41, 52 (1895); Woodworth v. Chesbrough, 244 U. S. 79, 82 (1917).
There are decisions in the Federal Courts of Appeals that depart from these unbroken precedents. Those decisions held or intimated that a plaintiff who accepts a remittitur “under protest” may challenge on appeal the correctness of the remittitur order. See, e. g., Bonn v. Puerto Rico Int’l Airlines, Inc., 518 F. 2d 89, 94 (CA1 1975); United States v. 1160.96 Acres of Land, 432 F. 2d 910 (CA5 1970); Gorsalitz v. Olin Mathieson Chemical Corp., 429 F. 2d 1033 (CA5 1970) ; Steinberg v. Indemnity Ins. Co. of North America, 364 F. 2d 266 (CA5 1966) ; Delta Engineering Corp. v. Scott, 322 F. 2d 11, 15 (CA5 1963). Other decisions have suggested that when entertaining cases pursuant to its diversity jurisdiction, a federal court should look to state practice to determine whether such an appeal is permitted. See Burnett v. Coleman Co., 507 F. 2d 726 (CA6 1974); Manning v. Altec, Inc., 488 F. 2d 127 (CA6 1973); Mooney v. Henderson Portion Pack Co., 334 F. 2d 7 (CA6 1964).
The proper role of the trial and appellate courts in the federal system in reviewing the size of jury verdicts is, however, a matter of federal law, see Hanna v. Plumer, 380 U. S. 460, 466-469 (1965); Byrd v. Blue Ridge Rural Electric Coop., 356 U. S. 525 (1958), and that law has always prohibited appeals in the situation at bar. The Court of Appeals for the Second Circuit correctly adhered to the consistent rule established by this Court’s decisions. In order to clarify whatever uncertainty might exist, we now reaffirm the longstanding rule that a plaintiff in federal court, whether prosecuting a.state or federal cause of action, may not appeal from a remittitur order he has accepted.
The petition for a writ of certiorari is granted, and the judgment is affirmed.
So ordered.
The Chief Justice and Mr. Justice Blackmun would grant the petition for certiorari but would have the case argued and given plenary consideration rather than disposed of summarily.

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