Concept:
The Constitution ordinarily divides legislative powers between Parliament and the State Legislatures through the Union List, State List, and Concurrent List. However, during a National Emergency proclaimed under Article 352, the Constitution temporarily enlarges the legislative competence of Parliament.
Step 1: Understanding Article 250.
• Article 250 provides that while a Proclamation of Emergency under Article 352 is in operation, Parliament acquires the power to make laws with respect to any matter in the State List.
• This provision ensures legislative uniformity and enables the Union Government to effectively deal with emergency situations affecting national security or stability.
Step 2: Why the other options are incorrect.
• Article 356 relates to failure of constitutional machinery in a State (President's Rule).
• Article 249 allows Parliament to legislate on State List matters when the Rajya Sabha passes a special resolution in the national interest.
• Article 360 deals with Financial Emergency.
Emergency under Article 352 + State List Legislation = Article 250.