How does a hydroelectric dam work?

Water flows through a dam and spins a turbine, which spins a generator. This generator creates electric current, which can be used in homes, businesses, factories, etc.
Animals are used to spin water through generators, which create electricity for cities, businesses, and even households.
Humans are hired to constantly pour water through turbines and generate power to create electricity.
Hydroelectric power does not exist.

Question

How does a hydroelectric dam work?
 	
	Water flows through a dam and spins a turbine, which spins a generator. This generator creates electric current, which can be used in homes, businesses, factories, etc.
	Animals are used to spin water through generators, which create electricity for cities, businesses, and even households.
	Humans are hired to constantly pour water through turbines and generate power to create electricity.
	Hydroelectric power does not exist.

perl · Answer

b) is kind of funny , d) is false

anonymous · Answer

I think it is "Animals are used to spin water through generators, which create electricity for cities, businesses, and even households." LOL