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:
NATIONAL LABOR RELATIONS BOARD v. BAYLOR UNIVERSITY MEDICAL CENTER
No. 78-80.
Decided October 30, 1978
Per Curiam.
Upon a complaint issued by the National Labor Relations Board and on the basis of a substantial record of evidence before a Hearing Examiner, the Board held that respondent's no-solicitation rule with respect to corridors and the cafeteria of the respondent hospital was overly broad and an unfair labor practice in violation of § 8 (a)(1) of the National Labor Relations Act, 29 U. S. C. § 158 (a)(1).
The Court of Appeals for the District of Columbia Circuit refused to enforce the Board’s order. 188 U. S. App. D. C. 109, 578 F. 2d 351 (1978). In reaching this conclusion, the Court of Appeals dealt with corridors and the cafeteria separately, assigning different reasons for its holding with respect to each. As to corridors, the court simply concluded that there was no substantial evidence supporting the Board’s conclusion that the corridors were not entitled to the same protection accorded other areas devoted essentially to patient care.
The court’s holding with respect to the cafeteria was based, however, on a legal judgment that no valid distinction can be made between a hospital cafeteria and cafeterias and restaurants that operate independently or in department stores. In the latter type of cases, the Board uniformly has held that the presumption in favor of the right to solicit on nonwork time in non work areas, established by Republic Aviation Corp. v. NLRB, 324 U. S. 793 (1945), is inapplicable. The Court of Appeals therefore applied the general rule applicable to commercial cafeterias and restaurants to the hospital cafeteria.
In Beth Israel Hospital v. NLRB, 437 U. S. 483 (1978), the Court concluded that the Republic Aviation presumption did apply to a hospital cafeteria maintained and operated primarily for employees and rarely used by patients or their families. The corridors of the hospital serving patients’ rooms, operating and treatment rooms, and other areas used by patients and their families were neither involved nor considered by the Court in Beth Israel.
As the Court’s decision in Beth Israel is relevant to the cafeteria issue in this case, we grant the petition for a writ of certiorari, vacate the judgment, and remand the case to the Court of Appeals for reconsideration in light of Beth Israel only on that issue. Insofar as the petition for certiorari seeks review of the corridor issue, the petition is denied.
In the present ease, the Board had applied the Republic Aviation presumption to all areas of the hospital deemed by it not devoted “strictly [to] patient care,” in accord with its decision in St. John’s Hospital and School of Nursing, Inc., 222 N. L. R. B. 1150 (1976). The Board held that the corridors throughout the hospital and the cafeteria were noncare areas.

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
3