नैसर्गिक न्यायाचा नियम ________ ला लागू होत नाही.

The correct answer is Option A (Legislative act of Legislature).

Key Points:
• Principles of Natural Justice & Administrative Law:
• Scope of Natural Justice: The twin principles of natural justice—*Nemo judex in causa sua* (rule against bias) and *Audi alteram partem* (rule of fair hearing)—apply strictly to all Judicial acts, Quasi-judicial acts, and Administrative acts affecting civil rights (*A.K. Kraipak v. Union of India*, 1969).
• Exclusion of Legislative Action: The rules of natural justice do not apply to purely legislative acts of the Legislature (or plenary/delegated legislation of a general legislative character). A legislative body is not bound to provide notice or personal hearings to citizens before enacting a statute.
• Thus, the rule of natural justice does not apply to a legislative act of the Legislature.
• Option (1) is the correct answer according to the official answer key.
• Key Takeaway: The principles of natural justice apply to judicial and administrative acts, but not to legislative acts of the Legislature.