The correct answer is A) hydroelectric.
The type of power that this structure produces is hydroelectric.
In times when we need to take care of the environment, hydroelectric power is a good way to produce electricity in large cities.
Also known as hydroelectric energy, this form of renewable energy is "environmentally friendly" in that it uses the power of water -the movement of water- to generate electricity. That is why governments invest in public infrastructure and built dams that help to produce electricity.