प्रशासनिक न्यायाधिकरण नुसार अस्तित्त्वात येतात.

The correct answer is Option C (Statute).

Key Points:
• Constitutional Authorization: Inserted by the 42nd Constitutional Amendment Act, 1976, Part XIV-A (Articles 323A and 323B) empowers the competent legislature to establish administrative and other tribunals.
• Creation by Statute (Legislative Act): Under Article 323A, Parliament enacted a formal legislative enactment—the Administrative Tribunals Act, 1985 (a statute).
• Nature of Tribunals: An Administrative Tribunal is a creature of a statute (statutory body). It cannot be established by mere executive whim, departmental discretion, administrative fiat, or judicial declaration; it requires an explicit statutory enactment passed by the legislature.
• Examples: The Central Administrative Tribunal (CAT) and Maharashtra Administrative Tribunal (MAT) derive their powers strictly from the 1985 Act.
• Key Result: Administrative Tribunals are the creation of Statute / Law (Option 3).
• Key Takeaway: Administrative Tribunals are quasi-judicial bodies created by a legislative enactment (statute) under Article 323A.