What happens when the substrate molecule binds at the active site of the enzyme?

A. The substrate molecule becomes stressed, which allows the reaction to occur.
B. The product molecule becomes stressed, which allows the reaction to occur.
C.
The enzyme molecule becomes stressed, which allows the reaction occur.

Peat deposits are found in waterlogged places where dead plant material piles up. when peat is buried, it undergoes compaction. it is subjected to heat and pressure for a long time, and a lot of water is squeezed out during this process. nearly ten vertical feet of original peat material becomes one vertical foot of coal. which of these remains unchanged in the system during the conversion of peat to coal? a) area b) density c) mass d) volume