Correct option is C
The correct answer is (c) Nagaland.
• Nagaland recorded negative population growth during 2001–2011.
• This was mainly due to methodological issues and migration factors.
• Census data showed a population decline in the state.
Information Booster:
• Census 2011 highlighted anomalies in Nagaland’s population figures.
• Out-migration also affected population trends.
• It was the only Indian state with negative growth in that decade.
Additional Knowledge:
• Later estimates suggest stabilization.
• Population growth varies widely across Indian states.