Answer:
C.
Step-by-step explanation:
One of France's greatest natural resources is its deep veins of coal used to generate 90% of France's electricity. The discovery and implementation of coal in France is what helped them enter the Industrial Revolution in the mid-19th century. It also played a hugely important role in during World War 1 and helped propel France towards becoming a "superpower" during the War. This was largely due to their increased production that was possible due to their vast coal resource.