Q: You are presented with the quiz "How is coal made?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time" and "most coal is fossil peat". So, what's the best answer to the question?

OPT: (I) Being exposed to air (II) to move people (III) Converting waste. (IV) heat is produced (V) It gets heated up (VI) Being buried under ground (VII) By hand (VIII) In a factory
A:
(VI)