Official Answer Key & Detailed Solution
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Correct Answer: Option (D) — Separation of powers
Concept & Option Breakdown
Standard Reference VerifiedThe doctrine of separation of powers (propounded by Montesquieu) ensures that the legislative, executive, and judicial branches check and balance one another. This prevents the concentration of absolute power in any single authority, thereby acting as the most effective structural safeguard of individual liberty in a liberal democracy.
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