Which process is MOST similar to the development of fossil fuels?

after millions of years underground the compounds that make up plankton and plants turn into fossil fuels Franklin decomposes into natural gas and oil white plants become cal today humans extract these resources through coal mining and the drilling of Oil and Gas Wells on land and Offshore

clouds form

solid ice forms on leaves.

water droplets form on grass.

c is the answer because when something is left after something evaporates that shows the chemical change.