Correct Answer: Option C — Petroleum. Petroleum is correctly identified as crude oil is processed in refineries into fuels and petrochemical feedstocks. Petroleum is also associated with anticlines, faults and porous reservoir rocks can form hydrocarbon traps. Another identifying fact about Petroleum is that crude oil is processed in refineries into fuels and petrochemical feedstocks. A further exam-relevant fact about Petroleum is that anticlines, faults and porous reservoir rocks can form hydrocarbon traps. Why the other options are incorrect: • Option A — Natural Gas: Natural Gas is the Krishna-Godavari basin and western offshore region are important associations. It is incorrect here because Natural Gas is instead associated with it is used for power, fertilizer manufacture, industry and household fuel. • Option B — Iron Ore: Iron Ore is important belts occur in Odisha-Jharkhand, Durg-Bastar-Chandrapur and Karnataka-Goa regions. It is incorrect here because Iron Ore is instead associated with beneficiation may improve ore quality before metallurgical use. • Option D — Manganese Ore: Manganese Ore is pyrolusite is an important manganese-bearing mineral. It is incorrect here because Manganese Ore is instead associated with it is also used in batteries and certain chemical industries. Exam Takeaway: Connect Petroleum with “crude oil is processed in refineries into fuels and petrochemical feedstocks” and “anticlines, faults and porous reservoir rocks can form hydrocarbon traps” for revision.