Answer:
C.
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.
She has experienced horizontal social mobility.
It means that she has only moved horizontally - her paycheck has stayed the same, she didn't get any special promotions or anything. The only thing that changed is the place where she works - if she were given more salary, it would be a vertical social mobility.
