Which of the following best describes what must have happened in the past that led to the huge coal reserves in the U.S?

Question

A.
Weathering and erosion must have caused soil and rock to break down to form coal.
B.
Plant matter must have been buried and placed under heat and pressure until it became coal.
C.
Weathering and erosion must have transported coal from other areas to the U.S.
D.
Plant matter must have been exposed to intensely cold temperatures until it became coal.

Answer 1

The option that best describes what must have happened in the past that led to the huge coal reserves in the U.S. is:

B. Plant matter must have been buried and placed under heat and pressure until it became coal.

This process, known as coalification, involves the transformation of plant material into coal over millions of years under specific conditions of pressure and temperature, resulting in the formation of significant coal deposits.