The correct answer is B. steel.
Explanation:
1. Gasoline, diesel, and plastics are products made from petroleum. They are derived from crude oil through refining processes.
2. Steel, on the other hand, is primarily made from iron ore and other raw materials in a process that involves smelting and refining in a blast furnace. While some processes in steel production might require the use of petroleum-based products like diesel for transportation or machinery, steel itself is not a direct product of petroleum.
