coal is made mostly of skeletal remains of animals. coal is formed from magma that has solidified over time. it quickly becomes petrified when water is removed. geologic processes continue over millions of years.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Coal is solid rock that began as organic material that was deposited in a swamp. The formation of coal suggests that
Possibilities:
- coal is made mostly of skeletal remains of animals.
- coal is formed from magma that has solidified over time.
- it quickly becomes petrified when water is removed.
- geologic processes continue over millions of years.

geologic processes continue over millions of years.