How is electrolysis most commonly used to produce an energy source?
A - Splitting water molecules produces oxygen, which organisms breathe to fuel their bodies.
B - Splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells.
C - Splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat.
D - Splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.