POSSIBLE POINTS Reread the passage titled "What is a fuel cell?" Basically, a fuel cell is a device that produces electricity from a chemical reaction. It has a positive and negative electrode. Most fuel cells need hydroge and oxygen to create power. As the two gases pass the electrodes within the fuel cell, they create electricity. Because each fuel cell can generate only small amount of electricity, they usually are arranged in stacks, so their combined electric output is at a more usable level. In addition to being a good way of making electricity, fuel cells have another huge advantage over other means of generating power: They produce practically no pollution. Gasoline burned in a typical automobile engine, or coal burned in a typical electricity-generating power plant can cause pollutants due to the burning process. Fuel cells use an electro-chemical process. Nothing is burned. The hydrogen and oxygen used in the fuel cell eventually combine to form a single byproduct: water vapor. What is the main organizational structure of the passage titled "What is a fuel cell?"
A cause and effect
B sequence
C description
D compare and contrast ​