Detailed Explanation:

Answer: Option 3 — The Democratic Republic of the Congo

The Democratic Republic of Congo (DRC) is the world's leading cobalt producer, accounting for approximately 70% of global production and holding half of the world's known cobalt reserves. Cobalt is a critical mineral essential for manufacturing rechargeable batteries used in electric vehicles and energy storage systems, making the DRC's dominance in this sector strategically significant for the global transition to clean energy.

📝 Short Notes: Global Cobalt Production and Strategic Importance

• Primary Use: Cobalt is crucial for lithium-ion batteries in electric vehicles, smartphones, laptops, and energy storage systems, as well as in superalloys, catalysts, magnets, and pigments.
• Top Producers: Democratic Republic of Congo (70%), Indonesia, Russia, Australia, and Madagascar constitute the top five cobalt-producing countries globally.
• DRC Dominance: The DRC holds approximately 50% of the world's known cobalt reserves and accounts for three-fourths of global production, making it a critical player in the clean energy transition.
• Strategic Mineral Status: Cobalt has been classified as a critical mineral by many governments, including India, due to its importance for future technologies and energy security.
• Indian Context: Small deposits of cobalt exist in Odisha and Jharkhand, though India remains heavily dependent on imports for its cobalt requirements.
• Geopolitical Concerns: The concentration of cobalt production in a single country raises concerns about supply chain vulnerabilities, ethical mining practices, and price volatility in the global market.