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The correct answer is option 2: Marmugoa and Mangalore. Kudremukh Iron-ore, which is mined in the Kudremukh hills of Karnataka in India, is primarily exported from these two ports.
Option 1, Kandla and Mumbai, is incorrect. Although these ports are major ports in India, they are not associated with the export of Kudremukh Iron-ore.
Option 3, Kochi and Tuticorin, is also incorrect. While these ports are known for their exports in other commodities, they are not connected to the export of Kudremukh Iron-ore.
Option 4, Paradip and Kolkata, is not correct either. These ports are important for other exports, but not specifically for Kudremukh Iron-ore.
Therefore, the correct option is 2: Marmugoa and Mangalore. These ports play a significant role in exporting Kudremukh Iron-ore to international markets.