Why Correct: The Supreme Court's 1994 S.R. Bommai vs. Union of India judgment established strict guidelines for imposing President's Rule under Article 356, requiring the central government to prove a breakdown of constitutional machinery and making the imposition subject to judicial review.
Distractor Analysis: A.K. Gopalan vs. Union of India (1950) dealt with preventive detention laws under Article 21. The Kaveri water dispute case involves interstate water sharing between Karnataka and Tamil Nadu under Article 262, not Article 356.
Takeaway: The Bommai case also held that the President's satisfaction under Article 356 is not beyond judicial scrutiny, and the imposition can be struck down if found malafide or based on irrelevant grounds.