Explanation:

- The “Rule of Law” isn’t just a phrase; it’s a foundational principle meaning everyone—government, leaders, citizens—is subject to the law.

- This core idea in India’s Constitution was borrowed from the United Kingdom. The UK has a long history of putting the law above individual rulers or government bodies.

- Russia’s constitution does mention the law, but its modern legal ideas didn’t directly influence India.

- The United States relies heavily on constitutional supremacy and judicial review, but the phrase “rule of law” as we talk about it in India traces back to the British legal tradition.

- Canada, while also rooted in British law, followed the UK model rather than set a unique standard India adopted.

The correct answer is Option 3: United Kingdom.